Browser version: IE 11.0.30
Result: white block is shown
Example: https://he.wikipedia.org/w/index.php?title=%D7%93%D7%95%D7%91%D7%95%D7%99&oldid=19183244
There are two different issues here:
- First it should degrade gracefully for any non supported browser (see also T143877 )
- IE11 should be supported