These might not be the only bugs, I recommend to do a thorough browser test for this feature on all supported platforms.
Steps to replicate the issue (include links if applicable):
IOS
- Open latest iOS safari:
- Open the Dialog in master in the docs page and toggle ON > fixed height
- see strange borders top and bottom which are offscreen
Firefox mobile
- In browserstack use something like android 16 > firefox
- Open the same Dialog with fixed height
- See how the button disappears half
What happens?:
Visual bugs appear
What should have happened instead?:
NO visual bugs
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Mobiel versions of safari and firefox.
Other information (browser name/version, screenshots, etc.):