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Backspacing a tab character in conpty causes visual corruption #5577

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opened 2026-01-31 00:16:27 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 00:16:27 +00:00
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Originally created by @getkirill on GitHub (Dec 15, 2019).

Environment

Windows build number: 18362.476
Windows Terminal version (if applicable): 0.7.3451.0

Python 3.5>>> 3.8

Steps to reproduce

Add to config file:

{
            // Make changes here to the python.exe profile
            "guid": "{0cab0dad-35be-5f56-a8ff-afceeeaa6101}",
            "name": "Python",
            "commandline": "C:\\Program Files\\Python35\\python.exe",
            "hidden": false,
	    "backgroundImage": "C:\\Users\\noncyrilicusername\\Documents\\DDLC\\extract\\src\\images.rpa\\images\\cg\\credits\\1.png",
            "backgroundImageOpacity": 0.5,
	    "icon": "C:\\Program Files\\Python35\\icon.png"
        }

Launch new tab, try to write text, press Enter, press Up Arrow, try to edit

Expected behavior

Normal text

Actual behavior

image

Originally created by @getkirill on GitHub (Dec 15, 2019). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 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: 18362.476 Windows Terminal version (if applicable): 0.7.3451.0 Python 3.5>>> 3.8 ``` # Steps to reproduce Add to config file: ```none { // Make changes here to the python.exe profile "guid": "{0cab0dad-35be-5f56-a8ff-afceeeaa6101}", "name": "Python", "commandline": "C:\\Program Files\\Python35\\python.exe", "hidden": false, "backgroundImage": "C:\\Users\\noncyrilicusername\\Documents\\DDLC\\extract\\src\\images.rpa\\images\\cg\\credits\\1.png", "backgroundImageOpacity": 0.5, "icon": "C:\\Program Files\\Python35\\icon.png" } ``` <!-- A description of how to trigger this bug. --> Launch new tab, try to write text, press Enter, press Up Arrow, try to edit # Expected behavior Normal text <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> # Actual behavior ![image](https://user-images.githubusercontent.com/26975352/70862493-32e4ff80-1f4e-11ea-85c3-bfc7a41818e2.png) <!-- What's actually happening? -->
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Reference: starred/terminal#5577
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