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Broken acrylic in htop on latest preview. #9894

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opened 2026-01-31 02:06:49 +00:00 by claunia · 2 comments
claunia commented 2026-01-31 02:06:49 +00:00
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Originally created by @r3core on GitHub (Jul 28, 2020).

Environment

Windows build number: Microsoft Windows NT 10.0.19041.0
Windows Terminal version (if applicable): 1.2.2022.0 (Preview) and 1.1.2021.0 (Stable)
Ubuntu build number: Ubuntu 20.04 LTS on WSL2

Any other software?
htop 2.2.0(Black Night theme)

Steps to reproduce

  1. Open preview Terminal (1.2.2022.0)
  2. Configure a WSL profile with acrylic effect enabled. (Mine is the following)
            {
                "guid": "{07b52e3e-de2c-5db4-bd2d-ba144ed6c273}",
                "hidden": false,
                "name": "Ubuntu-20.04",
                "source": "Windows.Terminal.Wsl",
                "commandline" : "wsl.exe ~",
                "fontFace": "Cascadia Code PL",
                "fontSize" : 8,
                "acrylicOpacity" : 0.5,
                "useAcrylic" : true,
                "colorScheme": "Tomorrow Night Burns", // Issue is present with other colour themes as well.
                "scrollbarState": "hidden"
            }
  1. Open htop
  2. Set htop to Black Night theme (F2 Setup -> Colors -> Black Night).
  3. Note acrylic is broken.
  4. Re-run above steps on the stable terminal (1.1.2021.0)
  5. Note acrylic is working as expected.

Expected behavior

In the stable Terminal, acrylic working as expected whether opened directly or within a tmux session, hence why I bothered with creating an issue.
stablefullhtop

stabletmuxhtop

Actual behavior

The preview Terminal's htop's acrylic is broken either way. Same tmux session was used for both screenshots.
previewfullhtop

previewtmuxhtop

Originally created by @r3core on GitHub (Jul 28, 2020). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment ```none Windows build number: Microsoft Windows NT 10.0.19041.0 Windows Terminal version (if applicable): 1.2.2022.0 (Preview) and 1.1.2021.0 (Stable) Ubuntu build number: Ubuntu 20.04 LTS on WSL2 Any other software? htop 2.2.0(Black Night theme) ``` # Steps to reproduce 1. Open preview Terminal (1.2.2022.0) 2. Configure a WSL profile with acrylic effect enabled. (Mine is the following) ```jsonc { "guid": "{07b52e3e-de2c-5db4-bd2d-ba144ed6c273}", "hidden": false, "name": "Ubuntu-20.04", "source": "Windows.Terminal.Wsl", "commandline" : "wsl.exe ~", "fontFace": "Cascadia Code PL", "fontSize" : 8, "acrylicOpacity" : 0.5, "useAcrylic" : true, "colorScheme": "Tomorrow Night Burns", // Issue is present with other colour themes as well. "scrollbarState": "hidden" } ``` 3. Open `htop` 4. Set `htop` to _Black Night_ theme (F2 Setup -> Colors -> Black Night). 5. Note acrylic is broken. 6. Re-run above steps on the stable terminal (1.1.2021.0) 8. Note acrylic is working as expected. # Expected behavior <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> In the stable Terminal, acrylic working as expected whether opened directly or within a tmux session, hence why I bothered with creating an issue. ![stablefullhtop](https://user-images.githubusercontent.com/37566423/88643187-bf6eb780-d104-11ea-8d51-586115fe8d50.png) ![stabletmuxhtop](https://user-images.githubusercontent.com/37566423/88643201-c39ad500-d104-11ea-8d8c-87d60d2af5b5.png) # Actual behavior <!-- What's actually happening? --> The preview Terminal's htop's acrylic is broken either way. Same tmux session was used for both screenshots. ![previewfullhtop](https://user-images.githubusercontent.com/37566423/88643263-d3b2b480-d104-11ea-95a6-16184d73de53.png) ![previewtmuxhtop](https://user-images.githubusercontent.com/37566423/88643278-d7463b80-d104-11ea-92d4-aeab6a1ab573.png)
claunia added the Needs-TriageNeeds-Tag-Fix labels 2026-01-31 02:06:49 +00:00
claunia commented 2026-01-31 02:06:50 +00:00
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@j4james commented on GitHub (Jul 28, 2020):

When the acrylic option is enabled, only the default background color is transparent. But the Black Night theme in htop sets the background color to black (which isn't meant to be transparent). So the latest version of Terminal is actually working as intended.

The reason why it was transparent in earlier versions of Terminal was because of a bug in conpty that converted black background colors to the default color, and that has now been fixed.

The bottom line is if you want the screen to be transparent, you need to use a theme with a default background color.

@j4james commented on GitHub (Jul 28, 2020): When the acrylic option is enabled, only the default background color is transparent. But the _Black Night_ theme in `htop` sets the background color to black (which isn't meant to be transparent). So the latest version of Terminal is actually working as intended. The reason why it was transparent in earlier versions of Terminal was because of a bug in conpty that converted black background colors to the default color, and that has now been fixed. The bottom line is if you want the screen to be transparent, you need to use a theme with a _default_ background color.
claunia commented 2026-01-31 02:06:51 +00:00
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@r3core commented on GitHub (Jul 28, 2020):

Right. Thanks for the clarification.
Will close this. 👍

@r3core commented on GitHub (Jul 28, 2020): Right. Thanks for the clarification. Will close this. 👍
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Reference: starred/terminal#9894
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