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Applications behind transparent and full sceen mode not re-rendered #18525

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opened 2026-01-31 06:16:42 +00:00 by claunia · 8 comments
claunia commented 2026-01-31 06:16:42 +00:00
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Originally created by @pecorarista on GitHub (Sep 22, 2022).

Windows Terminal version

1.14.2282.0

Windows build number

10.0.22000.0

Other Software

Google Chrome 105.0.5195.127
Firefox Browser 105.0

Steps to reproduce

Case 1

  1. Open a terminal window and set Background opacity < 100%, for example, 80%.
  2. Set full screen mode.
  3. Play a video on the browser.

Case 2

  1. Open a terminal window and set Background opacity < 100%, for example, 80%.
  2. Set full screen mode.
  3. Run a continuous build system on your web application code.
  4. Make a change on the code and make the system re-render the window.

Expected Behavior

The contents behind the terminal are re-rendered.

Actual Behavior

Case 1
Google Chrome: The video soon becomes black screen while the sound is being still played.
Firefox: The video stops after a while, showing the shot at the point and playing the sound.

Case 2
Google Chrome: The content is not rendered. For example, if the background of a web page is white, the screen gets white.
Firefox: The window looks the same.

Originally created by @pecorarista on GitHub (Sep 22, 2022). ### Windows Terminal version 1.14.2282.0 ### Windows build number 10.0.22000.0 ### Other Software Google Chrome 105.0.5195.127 Firefox Browser 105.0 ### Steps to reproduce Case 1 1. Open a terminal window and set `Background opacity` < 100%, for example, 80%. 2. Set full screen mode. 3. Play a video on the browser. Case 2 1. Open a terminal window and set `Background opacity` < 100%, for example, 80%. 2. Set full screen mode. 3. Run a continuous build system on your web application code. 4. Make a change on the code and make the system re-render the window. ### Expected Behavior The contents behind the terminal are re-rendered. ### Actual Behavior Case 1 Google Chrome: The video soon becomes black screen while the sound is being still played. Firefox: The video stops after a while, showing the shot at the point and playing the sound. Case 2 Google Chrome: The content is not rendered. For example, if the background of a web page is white, the screen gets white. Firefox: The window looks the same.
claunia added the Needs-TriageIssue-BugNeeds-Tag-FixNeeds-Attention labels 2026-01-31 06:16:42 +00:00
claunia commented 2026-01-31 06:16:43 +00:00
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@pecorarista commented on GitHub (Sep 22, 2022):

This is a screenshot of Case 1.

video-behind-transparent-terminal

@pecorarista commented on GitHub (Sep 22, 2022): This is a screenshot of Case 1. ![video-behind-transparent-terminal](https://user-images.githubusercontent.com/8929103/191664516-31a5e6e4-4eba-4e05-943c-ced73bc8348f.png)
claunia commented 2026-01-31 06:16:44 +00:00
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@DHowett commented on GitHub (Sep 22, 2022):

Thanks for the report!

I believe these applications can detect that there is a window in front of them and will not waste resources when that is the case. I have successfully conducted a Zoom and Teams call behind a Terminal, which suggests that it is possible.

I don't know if there is anything we can do about this. Hmm.

@DHowett commented on GitHub (Sep 22, 2022): Thanks for the report! I believe these applications can detect that there is a window in front of them and will not waste resources when that is the case. I have successfully conducted a Zoom and Teams call behind a Terminal, which suggests that it is _possible_. I don't know if there is anything we can do about this. Hmm.
claunia commented 2026-01-31 06:16:44 +00:00
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@pecorarista commented on GitHub (Sep 23, 2022):

@DHowett Thank you.
I started doubting that the problem is not a bug of Windows Terminal.
This is because I found a solution for Google Chrome:

Set chrome://flags/#calculate-native-win-occlusion Disabled.
https://support.google.com/chrome/thread/77201393/videos-turn-black-when-a-full-screen-window-is-on-top-of-the-window-playing-the-video?hl=en

I confirmed it worked.

@pecorarista commented on GitHub (Sep 23, 2022): @DHowett Thank you. I started doubting that the problem is not a bug of Windows Terminal. This is because I found a solution for Google Chrome: Set `chrome://flags/#calculate-native-win-occlusion` Disabled. https://support.google.com/chrome/thread/77201393/videos-turn-black-when-a-full-screen-window-is-on-top-of-the-window-playing-the-video?hl=en I confirmed it worked.
claunia commented 2026-01-31 06:16:44 +00:00
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@pecorarista commented on GitHub (Sep 23, 2022):

I also found a solution for Firefox:
Open about:config, search for widget.windows.window_occlusion_tracking.enabled , and set it false.
https://bugzilla.mozilla.org/show_bug.cgi?id=1759393

I'm sorry that I reported a problem not caused by Windows Terminal and solved it myself.
I hope this issue helps people having the same problem.

@pecorarista commented on GitHub (Sep 23, 2022): I also found a solution for Firefox: Open `about:config`, search for `widget.windows.window_occlusion_tracking.enabled` , and set it false. https://bugzilla.mozilla.org/show_bug.cgi?id=1759393 I'm sorry that I reported a problem not caused by Windows Terminal and solved it myself. I hope this issue helps people having the same problem.
claunia commented 2026-01-31 06:16:44 +00:00
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@DHowett commented on GitHub (Sep 23, 2022):

I'm sorry that I reported a problem not caused by Windows Terminal and solved myself.

You do not need to apologize! This is great information we can share with other users! 😄

@DHowett commented on GitHub (Sep 23, 2022): > I'm sorry that I reported a problem not caused by Windows Terminal and solved myself. You do not need to apologize! This is great information we can share with other users! 😄
claunia commented 2026-01-31 06:16:45 +00:00
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@ghost commented on GitHub (Jun 23, 2024):

@DHowett Thank you. I started doubting that the problem is not a bug of Windows Terminal. This is because I found a solution for Google Chrome:

Set chrome://flags/#calculate-native-win-occlusion Disabled. https://support.google.com/chrome/thread/77201393/videos-turn-black-when-a-full-screen-window-is-on-top-of-the-window-playing-the-video?hl=en

I confirmed it worked.

I have verified this solution works for Firefox

@ghost commented on GitHub (Jun 23, 2024): > @DHowett Thank you. I started doubting that the problem is not a bug of Windows Terminal. This is because I found a solution for Google Chrome: > > Set `chrome://flags/#calculate-native-win-occlusion` Disabled. https://support.google.com/chrome/thread/77201393/videos-turn-black-when-a-full-screen-window-is-on-top-of-the-window-playing-the-video?hl=en > > I confirmed it worked. I have verified this solution works for Firefox
claunia commented 2026-01-31 06:16:45 +00:00
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@nanaya commented on GitHub (Jan 21, 2025):

fwiw the option is gone on more recent chrome. Shouldn't the semi-transparent terminal cause it to not be considered an occlusion in the first place?

It's not a problem on at least two different transparent terminals (mintty and kitty (putty fork)) so I think it's something to do with windows terminal itself.

@nanaya commented on GitHub (Jan 21, 2025): fwiw the option is gone on more recent chrome. Shouldn't the semi-transparent terminal cause it to not be considered an occlusion in the first place? It's not a problem on at least two different transparent terminals (mintty and kitty (putty fork)) so I think it's something to do with windows terminal itself.
claunia commented 2026-01-31 06:16:45 +00:00
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@pecorarista commented on GitHub (Jul 30, 2025):

In recent versions of Chrome, the above option has been removed, so you need to launch it with --disable-features=CalculateNativeWinOcclusion instead.
In other words, add this to the end of the shortcut's target.

@pecorarista commented on GitHub (Jul 30, 2025): In recent versions of Chrome, the above option has been removed, so you need to launch it with `--disable-features=CalculateNativeWinOcclusion` instead. In other words, add this to the end of the shortcut's target.
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