xi-mac: When opening preferences via `CMD+,`, the entire page doesn't load at first.

Just exploring this repo and xi-editor, going to get my feet wet soon. I got it open and figured I’d try out the preferences panel, and this is what happened.

Only the first few lines are displayed, and then the rest is filled in as I scroll.

If, however, I type into the document and then hit CMD+, it opens it in a new frame which works just fine. So this is only when it opts to open it in the existing frame.