Older iOS can't scroll chat, CSS compilation too modern
Overlay
's top:0; bottom:0;...
(here) gets collapsed into inset:0
during the CSS compilation step.
inset
is quite modern, only supported on iOS Safari 14.5+.
Solutions:
- properly: adjust browserslist (which might fix other things, too)
- hackily:
style="top:0"
- WONTFIX