Using a combination of an AutomaticSize CanvasGroup with an AutomaticSize TextLabel seems to cause, upon the label’s text being updated, the text to get squished for one frame before it is rerendered correctly. This appears to be framerate independent, as I can reproduce this with both 144FPS and 60FPS.
This video should show the issue in full:
Since it’s quite fast (only lasts one frame), here’s the screenshots of what’s going on:
Here is a lightweight reproduction place: repro.rbxl (60.1 KB)
Studio 0.654.2.6540482
