Zoom is crashing MacVim :(

This is a duplicate of this SE question

If I open Macvim, everything works fine, unless I zoom in (using Cmd+"+").

If I do that, then I get a strange black boarder around the added bit of the window and the whole thing freezes.

This is what I see:

(except, bizarrely, it isn't, because I see a black boarder, the mac screenshot shows a light gray one, and the image uploaded to Github mysteriously makes it white, which suggests there's something wrong with me)

...and there is a 40 second video of the problem here: https://youtu.be/cjKWRGLSWTk, which, thankfully, shows the same black border I see. Thank you YouTube.

This appears to be part of a few linked bugs on MacVim, I have quite a lot of trouble with the display not refreshing if I've changed the zoom level while the app is already full-screen and that's quite frustrating.

What information can I give to help you replicate this?

Tái hiện vấn đề trong MacVim bằng cách mở một cửa sổ và phóng to bằng Cmd+"+", sau đó so sánh trạng thái treo và đường viền với câu hỏi Stack Exchange và video được liên kết. Hoàn thành khi thao tác phóng to không còn làm MacVim bị treo hoặc gặp sự cố, đồng thời cửa sổ được vẽ lại chính xác.