macvim-dev / macvim-dev/macvim
Buffer scrambles on mouse scroll
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Renderer
- Dominant language
- Vim Script
- Stars
- 7.9k
- Forks
- 691
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Description
Hello,
I'm not sure what the proper term is here, but after the latest update (8.1.873), my buffers frequently "scramble" when I use my mouse wheel to scroll. Screenshot attached.
Any tips? Thanks!

Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the reported buffer scrambling in MacVim 8.1.873 while using mouse-wheel scrolling, using the attached screenshot as the symptom reference. Compare the behavior with the prior update; done means the regression is fixed and scrolling no longer scrambles buffers.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- macos, vim
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100