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Terminal background colour bleeds through consol app's (VIM's) background colour - differently with different fonts. #6656

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opened 2026-01-31 00:44:03 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 00:44:03 +00:00
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Originally created by @Matthew-Maclean on GitHub (Feb 29, 2020).

Environment

Windows build number: Microsoft Windows [Version 10.0.18362.657]
Windows Terminal version (if applicable): Windows Terminal (Preview)
Version: 0.9.433.0

Any other software?

VIM 8.1.1512

Steps to reproduce

Using VIM 8.1 (probably other versions too), set a background colour in your colourscheme to one that is different to the one for your terminal's colourscheme. Turn on syntax highlighting, and make sure that at least some characters use a different colour. Set the font in your terminal to Cascaida Code or Consolas. View a file.

Expected behavior

The whole of VIM should have the background colour that you set, things outside of VIM should have the background colour of your terminal. This is how it might look (done in the old Command Prompt since it gets it right):
good

Actual behavior

(in the examples below, VIM's background colour is a sort of grey-green (#272822), and Terminal's is yellow (#FFFF00) to make the bug easy to see).

If the font is Consolas: Between changes in the colour of text, the background colour of the terminal bleeds though the background colour of VIM.
bad_consolas

If the font is Cascadia Code, Between every other line, a line of the terminal's background colour bleeds through. Also note that for the Cascadia Code version, there doesn't need to be any syntax highlighting happening. The bug will appear on a blank file.
bad_cascadia

(notes: The easy workaround is to just have your terminal background be the same as your VIM background. This probably shows up differently or maybe not at all on different fonts.)

Originally created by @Matthew-Maclean on GitHub (Feb 29, 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 ``` Windows build number: Microsoft Windows [Version 10.0.18362.657] Windows Terminal version (if applicable): Windows Terminal (Preview) Version: 0.9.433.0 Any other software? VIM 8.1.1512 ``` # Steps to reproduce Using VIM 8.1 (probably other versions too), set a background colour in your colourscheme to one that is different to the one for your terminal's colourscheme. Turn on syntax highlighting, and make sure that at least some characters use a different colour. Set the font in your terminal to Cascaida Code or Consolas. View a file. # Expected behavior The whole of VIM should have the background colour that you set, things outside of VIM should have the background colour of your terminal. This is how it might look (done in the old Command Prompt since it gets it right): ![good](https://user-images.githubusercontent.com/20546688/75600493-ec4b6f80-5a7d-11ea-8ec8-091bd8db1114.png) # Actual behavior (in the examples below, VIM's background colour is a sort of grey-green (#272822), and Terminal's is yellow (#FFFF00) to make the bug easy to see). If the font is Consolas: Between changes in the colour of text, the background colour of the terminal bleeds though the background colour of VIM. ![bad_consolas](https://user-images.githubusercontent.com/20546688/75600515-2fa5de00-5a7e-11ea-8831-943690f0d884.png) If the font is Cascadia Code, Between every other line, a line of the terminal's background colour bleeds through. Also note that for the Cascadia Code version, there doesn't need to be any syntax highlighting happening. The bug will appear on a blank file. ![bad_cascadia](https://user-images.githubusercontent.com/20546688/75600542-63810380-5a7e-11ea-8eb9-d60ad5406a92.png) (notes: The easy workaround is to just have your terminal background be the same as your VIM background. This probably shows up differently or maybe not at all on different fonts.)
claunia added the Resolution-Duplicate label 2026-01-31 00:44:03 +00:00
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Reference: starred/terminal#6656
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