When running mash in the Oxygen or Pixel configuration there is an occasional failed DCHECK that crashes the mus process. It happens infrequently and I'm not sure if any specific actions trigger it.

[131383:131383:0425/092627:838083214704:FATAL:gl_renderer.cc(1156)] Check failed: tex_scale_x <= 1.0f (1.04281 vs. 1)
#0 0x7f1348bf7bbe base::debug::StackTrace::StackTrace()
#1 0x7f1348c14c9a logging::LogMessage::~LogMessage()
#2 0x7f1345dffcc4 cc::GLRenderer::DrawRenderPassQuad()
#3 0x7f1345dfdb58 cc::GLRenderer::DoDrawQuad()
#4 0x7f1345df4093 cc::DirectRenderer::DrawRenderPass()
#5 0x7f1345df3319 cc::DirectRenderer::DrawRenderPassAndExecuteCopyRequests()
#6 0x7f1345df3100 cc::DirectRenderer::DrawFrame()
#7 0x7f1345cc2bcb cc::Display::DrawAndSwap()
#8 0x7f1345cc52f7 cc::DisplayScheduler::DrawAndSwap()
#9 0x7f1345cc45bd cc::DisplayScheduler::OnBeginFrameDeadline()
#10 0x7f1345cc69ec _ZN4base8internal7InvokerINS_13IndexSequenceIJLm0EEEENS0_9BindStateINS0_15RunnableAdapterIMN2cc16DisplaySchedulerEFvvEEEFvPS7_EJNS_7WeakPtrIS7_EEEEENS0_12InvokeHelperILb1EvSA_EEFvvEE3RunEPNS0_13BindStateBaseE
#11 0x7f1345cc69ec _ZN4base8internal7InvokerINS_13IndexSequenceIJLm0EEEENS0_9BindStateINS0_15RunnableAdapterIMN2cc16DisplaySchedulerEFvvEEEFvPS7_EJNS_7WeakPtrIS7_EEEEENS0_12InvokeHelperILb1EvSA_EEFvvEE3RunEPNS0_13BindStateBaseE
#12 0x7f1348bf8c26 base::debug::TaskAnnotator::RunTask()
#13 0x7f1348c1e9e5 base::MessageLoop::RunTask()
#14 0x7f1348c1ed18 base::MessageLoop::DeferOrRunPendingTask()
#15 0x7f1348c1ef2b base::MessageLoop::DoWork()
#16 0x7f1348c21929 base::MessagePumpLibevent::Run()
#17 0x7f1348c1e581 base::MessageLoop::RunHandler()
#18 0x7f1348c496cd base::RunLoop::Run()
#19 0x7f13466742ef shell::ApplicationRunner::Run()
#20 0x7f13466744ac shell::ApplicationRunner::Run()
#21 0x7f1346671078 MojoMain
#22 0x000000449e08 shell::RunNativeApplication()
#23 0x000000446dce shell::(anonymous namespace)::RunNativeLibrary()
#24 0x000000447093 _ZN4base8internal15RunnableAdapterIPFvPvN4mojo16InterfaceRequestIN5shell5mojom11ShellClientEEEEE3RunIJRKS2_S8_EEEvDpOT_
#25 0x00000044705c _ZN4base8internal7InvokerINS_13IndexSequenceIJLm0EEEENS0_9BindStateINS0_15RunnableAdapterIPFvPvN4mojo16InterfaceRequestIN5shell5mojom11ShellClientEEEEEESD_JRS6_EEENS0_12InvokeHelperILb0EvSF_EEFvSC_EE3RunEPNS0_13BindStateBaseEOSC_
#26 0x00000044929f shell::ChildProcessMain()
#27 0x000000446cf5 shell::ChildProcessMain()
#28 0x00000040d530 shell::StandaloneShellMain()
#29 0x7f1347f26ec5 __libc_start_main
#30 0x000000409090 <unknown>

It seems possibly related to this TODO: https://code.google.com/p/chromium/codesearch#chromium/src/components/mus/ws/platform_display.cc&sq=package:chromium&type=cs&l=115