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Resizing the terminal window results in glitchy text-rendering behavior. (Duplicate #3088) #10093

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opened 2026-01-31 02:12:23 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 02:12:23 +00:00
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Originally created by @Va1a on GitHub (Aug 10, 2020).

Environment

Windows build number: Microsoft Windows NT 10.0.19041.0
Windows Terminal version (if applicable): 1.1.2021.0

Steps to reproduce

Run any program which re-writes a line of text (such as a python script which overwrites the current line by moving the cursor up and clearing it, and then re-writing a new line- and does this action frequently in a loop, and attempt to resize the window.

Expected behavior

Resizing the window should not affect the text at all, it should remain as it was properly printed before the resize.
Like so: https://gyazo.com/33d6e441d0bb8105ec118c6a9e69f900

Actual behavior

The text being constantly overwritten is printed multiple times as if the line up and line clear ansi escape codes are not properly functioning while the windows is being resized.
Like so: https://gyazo.com/47d1ddba7916222121417d2e4776788a

Originally created by @Va1a on GitHub (Aug 10, 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): 1.1.2021.0 ``` # Steps to reproduce <!-- A description of how to trigger this bug. --> Run any program which re-writes a line of text (such as a python script which overwrites the current line by moving the cursor up and clearing it, and then re-writing a new line- and does this action frequently in a loop, and attempt to resize the window. # Expected behavior Resizing the window should not affect the text at all, it should remain as it was properly printed before the resize. Like so: https://gyazo.com/33d6e441d0bb8105ec118c6a9e69f900 <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> # Actual behavior The text being constantly overwritten is printed multiple times as if the line up and line clear ansi escape codes are not properly functioning while the windows is being resized. Like so: https://gyazo.com/47d1ddba7916222121417d2e4776788a <!-- What's actually happening? -->
claunia added the Needs-TriageNeeds-Tag-Fix labels 2026-01-31 02:12:23 +00:00
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Reference: starred/terminal#10093
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