Steps to reproduce:
- Edit in VE, trigger an edit conflict.
- Decide to resolve it.
Expected:
The old editor shows up with your changes.
Actual:
The old editor shows up, but tells you your browser doesn't support Unicode.
Seems like that the fields for the new check (T67297: Remove $wgBrowserBlackList and associated EditPage methods) are not sent after switching from VE.
