Chrome Version: 68.0.3440.42
OS: Mac OS X 10_13_5

When switching between tabs, I sometimes see a rapid flash of graphics content from a *different* tab showing up, for a fraction of a second, before the tab repaints.

In one case, the content that showed up was for a *tab I had already closed*. What that means, to me, is that the state for a closed tab might show up on my screen (however momentarily) when switching between tabs. That could be a privacy risk -- in this case, the closed tab was from my bank account.

While it happens rapidly enough that it is hard to see, someone taking a video of the screen could easily read the contents of the other tab state.

This does not happen exclusively with closed tabs -- sometimes the tab state shown is for another tab that is open.

It is hard to reproduce this, but I have seen it happen several times on different days, so I believe there is a real bug here.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.


Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Hardware accelerated
Hardware Protected Video Decode: Unavailable
Rasterization: Hardware accelerated
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
Viz Service Display Compositor: Disabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
Driver Bug Workarounds
adjust_src_dst_region_for_blitframebuffer
decode_encode_srgb_for_generatemipmap
disable_2d_canvas_auto_flush
disable_framebuffer_cmaa
get_frag_data_info_bug
pack_parameters_workaround_with_pack_buffer
regenerate_struct_names
remove_invariant_and_centroid_for_essl3
scalarize_vec_and_mat_constructor_args
set_zero_level_before_generating_mipmap
unfold_short_circuit_as_ternary_operation
unpack_alignment_workaround_with_unpack_buffer
use_intermediary_for_copy_texture_image
use_unused_standard_shared_blocks
Problems Detected
Protected video decoding with swap chain is for Windows and Intel only
Disabled Features: protected_video_decode
Unfold short circuit on Mac OS X: 307751
Applied Workarounds: unfold_short_circuit_as_ternary_operation
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
Mac drivers handle struct scopes incorrectly: 403957
Applied Workarounds: regenerate_struct_names
glGenerateMipmap fails if the zero texture level is not set on some Mac drivers: 560499
Applied Workarounds: set_zero_level_before_generating_mipmap
Pack parameters work incorrectly with pack buffer bound: 563714
Applied Workarounds: pack_parameters_workaround_with_pack_buffer
Alignment works incorrectly with unpack buffer bound: 563714
Applied Workarounds: unpack_alignment_workaround_with_unpack_buffer
copyTexImage2D fails when reading from IOSurface on multiple GPU types.: 581777
Applied Workarounds: use_intermediary_for_copy_texture_image
Use GL_INTEL_framebuffer_CMAA on ChromeOS: 535198
Applied Workarounds: disable_framebuffer_cmaa
glGetFragData{Location|Index} works incorrectly on Max: 638340
Applied Workarounds: get_frag_data_info_bug
Decode and encode before generateMipmap for srgb format textures on macosx: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Insert statements to reference all members in unused std140/shared blocks on Mac: 618464
Applied Workarounds: use_unused_standard_shared_blocks
adjust src/dst region if blitting pixels outside read framebuffer on Mac: 644740
Applied Workarounds: adjust_src_dst_region_for_blitframebuffer
Mac driver GL 4.1 requires invariant and centroid to match between shaders: 639760, 641129
Applied Workarounds: remove_invariant_and_centroid_for_essl3
Disable KHR_blend_equation_advanced until cc shaders are updated: 661715
Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent)
Don't expose disjoint_timer_query extensions to WebGL: 808744
glFlush error on Mac: 841755
Applied Workarounds: disable_2d_canvas_auto_flush
Viz service display compositor is not enabled by default.
Disabled Features: viz_display_compositor
Skia renderer is not used by default.
Disabled Features: skia_renderer
Skia deferred display list is not used by default.
Disabled Features: skia_deferred_display_list
Version Information
Data exported	2018-07-16T19:34:08.891Z
Chrome version	Chrome/68.0.3440.42
Operating system	Mac OS X 10.13.5
Software rendering list URL	https://chromium.googlesource.com/chromium/src/+/1e775812933cd8759b2ac69a967b17767d3063bd/gpu/config/software_rendering_list.json
Driver bug list URL	https://chromium.googlesource.com/chromium/src/+/1e775812933cd8759b2ac69a967b17767d3063bd/gpu/config/gpu_driver_bug_list.json
ANGLE commit id	ba1627086779
2D graphics backend	Skia/68 e1b44566996886959f9d01e5dadd5eb779f14c1d-
Command Line	/Applications/Google Chrome.app/Contents/MacOS/Google Chrome -psn_0_90134 --restore-last-session --flag-switches-begin --disable-features=ResourceLoadScheduler --flag-switches-end --isolate-origins=https://chromium.org/,https://corp.googleapis.com/,https://storage.googleapis.com,https://ajax.googleapis.com,https://fonts.googleapis.com,https://googleplex.com/,https://googlesource.com/,https://youtube.com/,https://google.com/,https://googleacquisitionmigration.com/,https://googleusercontent.com/,https://googleprod.com/,https://nest.com/,https://myworkday.com/,https://chromiumapp.org/,https://lucidchart.com/,https://service-now.com/,https://concursolutions.com/,https://salesforce.com/,https://gcorppartners.com/,https://morganstanley.com/,https://schwab.com/,https://qualtrics.com/,https://ultipro.com/,https://google.secure2-enroll.com/,https://googlegroups.com/,https://google.secure.force.com/,https://ebenefitsnow.com/,https://firebase.com/,https://elo.plusrelocation.com/,https://anthem.com/,https://g.viapeople.net/,https://gdjap.com/,https://asana.com/,https://perquisite.net/,https://postini.com/,https://perkhub.com/,https://gstave.us/,https://geolearning.com/,https://lecorpio.com/,https://inverify.net/,https://preceda.com.au/,https://secureacceptance.cybersource.com/,https://solium.com/,https://fgvms.com/,https://ridecell.com/,https://tds.ie/,https://sprinklr.com/,https://smartsheet.com/,https://fieldglass.net/,https://dochub.com/
Driver Information
Initialization time	31
In-process GPU	false
Passthrough Command Decoder	false
Direct Composition	false
Supports overlays	false
Sandboxed	true
GPU0	VENDOR = 0x1002, DEVICE= 0x6810 *ACTIVE*
GPU1	VENDOR = 0x1002, DEVICE= 0x6810
Optimus	false
AMD switchable	false
Driver vendor	ATI
Driver version	1.66.42
Driver date	
Pixel shader version	4.10
Vertex shader version	4.10
Max. MSAA samples	8
Machine model name	MacPro
Machine model version	6.1
GL_VENDOR	ATI Technologies Inc.
GL_RENDERER	AMD Radeon HD - FirePro D300 OpenGL Engine
GL_VERSION	4.1 ATI-1.66.42
GL_EXTENSIONS	GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_depth_bounds_test GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_mirror_clamp GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier
Disabled Extensions	GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent
Disabled WebGL Extensions	EXT_disjoint_timer_query EXT_disjoint_timer_query_webgl2
Window system binding vendor	
Window system binding version	
Window system binding extensions	
Direct rendering	Yes
Reset notification strategy	0x0000
GPU process crash count	0
Compositor Information
Tile Update Mode	Zero-copy
Partial Raster	Enabled
GpuMemoryBuffers Status
ATC	Software only
ATCIA	Software only
DXT1	Software only
DXT5	Software only
ETC1	Software only
R_8	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
R_16	Software only
RG_88	Software only
BGR_565	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
BGRX_8888	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE
BGRX_1010102	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
RGBX_1010102	Software only
BGRA_8888	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
RGBA_F16	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
YVU_420	Software only
YUV_420_BIPLANAR	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
UYVY_422	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT
Display(s) Information
Info	Display[722482385] bounds=[0,0 2560x1600], workarea=[0,23 2560x1577], scale=1, external.
Color space information	{primaries_d50_referred: [[0.6348, 0.3406], [0.3018, 0.5975], [0.1629, 0.0790]], transfer:0.0000*x + 0.0000 if x < 0.0000 else (1.0000*x + 0.0000)**1.8008 + 0.0000, matrix:RGB, range:FULL}
Bits per color component	8
Bits per pixel	24
Video Acceleration Information
Log Messages
[637:775:0703/130855.096783:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131010.320471:ERROR:gles2_cmd_decoder.cc(18008)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[637:775:0703/131010.320528:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131010.320562:ERROR:gles2_cmd_decoder.cc(18008)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[637:775:0703/131010.320585:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131010.340232:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131010.340272:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131019.591516:ERROR:gles2_cmd_decoder.cc(18008)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[637:775:0703/131019.591552:ERROR:gles2_cmd_decoder.cc(12468)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_VALUE : glScheduleCALayerCHROMIUM: unsupported texture format
[637:775:0703/131019.591572:ERROR:gles2_cmd_decoder.cc(18008)] : [.DisplayCompositor-0x7f7f3205f800]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[.... truncated ....]