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Issue metadata

Status: Available
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 3
Type: Bug



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some window show black preview on window share dialog

Reported by aisn...@gmail.com, Nov 1

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Steps to reproduce the problem:
1. open many windows on Windows 10 OS
2. try to share window via Chrome sharing extension
3. 

What is the expected behavior?
all windows preview should be display normally

What went wrong?
some windows show black preview image

Did this work before? N/A 

Chrome version: 70.0.3538.77  Channel: stable
OS Version: 10.0
Flash Version:
 
chrome-window-share-black.png
145 KB View Download
Components: -UI Blink>GetUserMedia>Desktop
Owner: braveyao@chromium.org
Status: Assigned (was: Unconfirmed)
Brave, is this a known issue for modern apps?
Status: WontFix (was: Assigned)
Yes, it's true.
Closed as nothing we can do so far.
Status: Unconfirmed (was: WontFix)
Since it was mentioned when we talked, can you confirm that Webex can get a preview of this window, even when the window isn't foregrounded?
The Cisco Webex Meetings desktop app replaces Webex Productivity Tools in WBS33. And fortunately, the window of Meeting desktop app can get a preview in the picker. So it's time to update to WBS33 now :)

Generally, if we get black preview of a window in the picker, it means that window doesn't support GDI capture methods, BitBlt()/PrintWindow(). But as shown in https://bugs.chromium.org/p/chromium/issues/detail?id=700037#c10, I also noticed that some other app can get preview of a UWP/HW-accelerated window. Not sure how they can achieve that yet.
Labels: Needs-Triage-M70
Labels: -Pri-2 -Needs-Triage-M70 Pri-3
Status: Available (was: Unconfirmed)

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