Issue with Black Triangles/Shapes in PowerShell/Windows Terminal + Oh My Posh

[GustavoBorges13]

Windows Terminal version

1.22.3232.0

Windows build number

10.0.26100.2454

Other Software

oh-my-posh 24.11.2 (default theme, clean installation)

Steps to reproduce

Hello everyone,

I formatted my computer yesterday, and Oh-My-Posh with Windows Terminal was working perfectly before that. However, now I'm encountering rendering issues with some shapes/triangles. It seems to be an old problem that many people have experienced. I found several similar issues from the past, but so far, I haven’t found any recent ones. Just in case, I’m opening this issue in the hope that a solution might have been found after two years. Below is the reference material I studied and tried using the available solutions: #13553, #7014, #16271, #5897.

If anyone has any suggestions or insights on how to resolve this, I would greatly appreciate it. Thank you in advance for your help!

System Info

• Edition: Windows 11 Pro
• Version: 24H2
• Installed on: 11/30/2024
• OS Build: 26100.2454
• Experience: 1000.26100.36.0

Steps to Reproduce

1. Install PowerShell 7.4.6 (x64) from the Microsoft website.
   

2. Install Windows Terminal Preview (or Windows Terminal) from the Microsoft Store.
   

3. Open Windows Terminal.

4. Install Oh My Posh from Windows Terminal:
   winget install JanDeDobbeleer.OhMyPosh -s winget
   

5. Run:
   code $PROFILE
   Add the following line:
   oh-my-posh init pwsh --config "THEME PATH" | Invoke-Expression
   

6. Restart Windows Terminal.
   

7. Change the font: Go to Settings -> Defaults -> Appearance -> Text and set the Font face to "SpaceMono Nerd Font Mono".
   

8. Reduce the background transparency: Settings -> Defaults -> Appearance -> Transparency -> Background opacity <= 80. (This setting alone triggers the bug).
   
   

9. Enable acrylic material: Settings -> Defaults -> Appearance -> Transparency -> Enable acrylic material = ON. (The bug persists even with this setting).
   
   

Tests

10.1 Windows Configurations

• Go to Personalization -> Colors -> Transparency effects and switch On to Off (2x).
  
  
  Result:
  

10.2 Update PSReadLine

• Run the command:
  Update-Module PSReadLine
  

10.3 Change Graphics API for rendering

• Go to Windows Terminal -> Configurations -> Rendering -> Graphics API and select Direct2D/Direct3D 11.
  
  

10.4 Virtual Machine
I tested performing the same operation on a machine with the same .iso I installed, and the error persists there as well. If needed, I am more than willing to test on other versions and different .isos.

Expected Behavior

Actual Behavior

[similar-issues-ai]

We've found some similar issues:

• Combining Windows Terminal and Oh my Posh leads to black rendered triangles #15491 , similarity score: 85%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

Note: You can give me feedback by 👍 or 👎 this comment.

[lhecker]

I may be missing something, but isn't your issue identical to what's described in #7014 (which you mention yourself)?

[GustavoBorges13]

I may be missing something, but isn't your issue identical to what's described in #7014 (which you mention yourself)?

Yes, you’re right. I hadn’t noticed zadjii-msft's message at the end of the thread. Initially, I thought I was the only one experiencing this issue, but it seems a solution is already in development. In any case, this bug doesn’t bother me at all.

Thank you very much for your attention! You can go ahead and close the ticket.

[lhecker]

Thank you for the report, however.
Unfortunately, it's not trivial to fix this issue without causing regressions and I won't have time to work on this in the near term. The ideal solution is to implement a so called "tiled deferred shading" via a compute shader for rendering the text.
I'll be closing the issue for now then.

[j4james]

FYI, I recently discovered that nerd-fonts added a pair of inverted arrow head glyphs specifically to solve this problem. See ryanoasis/nerd-fonts#1490.