Automatic adjustment of width 0 number widgets stopped working
This seems to be a new regression in 2.4.9, what I can say right now is that 2.4.7 doesn't exhibit this issue. (Currently building 2.4.8 so that I can confirm that it's in 2.4.9.)
Here's a screenie from 2.4.9:
Here's how it's supposed to look (screenshot from 2.4.7):
Note how the widget automatically resizes, which is what it's supposed to do when it has zero width.
Neither the main window nor the dev console shows any errors. Maybe some more fallout from the GUI refactoring?