The contents wobble / jitter a little when resizing a window

[yay]

Very excited about this project! It looks super promising so far in terms of features and momentum.
With that said, I'd like to provide some feeback about an issue I noticed while trying iced out a few months ago that's still there.

The fist part of the video shows the wobbling and the second the jittering:

Both issues are subtle, but are definitely there. For example, when I resize this GitHub page while writing this, the text inside doesn't wobble when the window is wide enough and the text area is centered and doesn't jitter when the page narrows and the text starts to wrap.

I don't know what causes this, but my guess would be that the first issue is caused by render lagging the layout by a frame or two and the second by pixel grid alignment inconsistencies from frame to frame? I haven't dug into the code so could be entirely wrong on both counts :)

[0x7CFE]

In my case it's not just wobbling but a true segfault. This usually happens if I try to reduce window size quite a lot and then expand it again significantly, so that window internals start losing their sync.