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Scenario: ResizeWithReflow and related issues in Windows Terminal #5881

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opened 2026-01-31 00:24:19 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 00:24:19 +00:00
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Originally created by @zadjii-msft on GitHub (Jan 13, 2020).

Originally assigned to: @zadjii-msft on GitHub.

The Terminal has a lot of problems resizing right now. I'm going to use this issue to try and track them all, and make sure we get holistic solutions.

  • #1465 Bug: resizing doesn't work properly in Windows Terminal (PR #4741)
    • This is "scrollback doesn't reflow on resize, it instead gets clamped/cut off"
    • Scrollback not rewrapped on resize #3491
  • #1245 linewrap then backspace produces unexpected visuals, missing characters
    • Generally related to linewrapping in the Terminal
    • Also related to the original #357
  • #3494 Maintain scrollbar position during resize
  • Closing a pane does not reset the PowerShell text position #2432
    • 3/17: I believe this is actually a PSReadline bug, so I'm removing it from this todo list

Bucket of horrible conpty resizing chaos

  • #3490 Flattening the window loses scrollback lines (PR #4354) (PR #4741)
    • This one has kinda spiraled out of control
    • #4771 Possibly a dupe? "Visual artefacts in splitted window"

Conpty cursor visibility bugs, that aren't actually related to resizing but found in the meantime

  • MSYS2 bash: Cursor display doesn't follow arrow keys after running Emacs #2697
  • Bug Report Zooming causes the second line to act strange #2211
  • Curses programming: cursor handled incorrectly #4102
  • Emacs cursor displayed incorrectly #2642
  • Cursor position seems to be mispositioned when using WLS2 & git rebase #4644

Conpty needs to emit lines of text so that a terminal emulator can wrap them

  • MSFT:16485846 [conpty] Wrapped lines should not render a \r\n
    • And regression: MSFT:18123777: lines that are wrapped are also moved up by one row
    • I'm sure there's a GH issue that's the equivalent of that issue, but I haven't found it yet.
      • maybe "#405 Text Wrapping with ConPTY"
  • #3088 WSL Terminal Line Endings
    • This looks related - probably some combo of "conpty doesn't emit wrapped lines" and "Terminal doesn't mark lines as wrapped correctly"
    • 3/17: I no longer believe that this is part of the same ResizeWithReflow madness, and that this was instead a bug that's existed in conhost for a while now.
  • #3367 Make sure WT can copy wrapped lines as a single line

Bugs in the wake of #4741

  • #4955 Reflow with long input loses cursor
    • Turns out we couldn't repro this one.
  • #5029 Alt+Enter rendering error
  • #5178 Terminal background color has the wrong color applied when terminal is snapped
    • this was actually #3848, so we're punting it

Some alt-buffer things that we're punting till v1.x

  • #3492 Alternate screen shouldn't write to scrollback or normal screen
  • #3493 Consider not wrapping the alternate screen on resize
  • #381 ConPTY: pass through requests for the alt buffer
    • This is also #4676 Lines scrolled up by less command remain to exist after quitting the command
Originally created by @zadjii-msft on GitHub (Jan 13, 2020). Originally assigned to: @zadjii-msft on GitHub. The Terminal has a lot of problems resizing right now. I'm going to use this issue to try and track them all, and make sure we get holistic solutions. * [x] #1465 Bug: resizing doesn't work properly in Windows Terminal (PR #4741) - This is "scrollback doesn't reflow on resize, it instead gets clamped/cut off" - Scrollback not rewrapped on resize #3491 * [x] #1245 linewrap then backspace produces unexpected visuals, missing characters - Generally related to linewrapping in the Terminal - Also related to the original #357 * [x] #3494 Maintain scrollbar position during resize * Closing a pane does not reset the PowerShell text position #2432 - **3/17**: I believe this is actually a PSReadline bug, so I'm removing it from this todo list ## Bucket of horrible conpty resizing chaos * [x] #3490 Flattening the window loses scrollback lines ~~(PR #4354)~~ (PR #4741) - This one has kinda spiraled out of control - [x] #4771 Possibly a dupe? "Visual artefacts in splitted window" ## Conpty cursor visibility bugs, that aren't _actually_ related to resizing but found in the meantime * [x] MSYS2 bash: Cursor display doesn't follow arrow keys after running Emacs #2697 * [x] Bug Report Zooming causes the second line to act strange #2211 * [x] Curses programming: cursor handled incorrectly #4102 * [x] Emacs cursor displayed incorrectly #2642 * [x] Cursor position seems to be mispositioned when using WLS2 & git rebase #4644 ## Conpty needs to emit lines of text so that a terminal emulator can wrap them * [x] MSFT:16485846 \[conpty\] Wrapped lines should not render a \r\n - And regression: MSFT:18123777: lines that are wrapped are also moved up by one row - I'm sure there's a GH issue that's the equivalent of that issue, but I haven't found it yet. - maybe "#405 Text Wrapping with ConPTY" * #3088 WSL Terminal Line Endings - This looks related - probably some combo of "conpty doesn't emit wrapped lines" and "Terminal doesn't mark lines as wrapped correctly" - **3/17**: I no longer believe that this is part of the same ResizeWithReflow madness, and that this was instead a bug that's existed in conhost for a while now. * [x] #3367 Make sure WT can copy wrapped lines as a single line ## Bugs in the wake of #4741 * #4955 Reflow with long input loses cursor - Turns out we couldn't repro this one. * [x] #5029 Alt+Enter rendering error * #5178 Terminal background color has the wrong color applied when terminal is snapped - this was actually #3848, so we're punting it ## Some alt-buffer things that we're punting till v1.x * [ ] #3492 Alternate screen shouldn't write to scrollback or normal screen * [ ] #3493 Consider not wrapping the alternate screen on resize * [ ] #381 ConPTY: pass through requests for the alt buffer - This is also #4676 Lines scrolled up by `less` command remain to exist after quitting the command
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