Steps to reproduce:
- Enable MsCalendar on wiki
- Create page with <MsCalendar>Name of the calendar</MsCalendar> or with text which you want
- Add some entry
Expected behaviour:
There should be border like in screenshot.
Actual behaviour:
There aren't borders, see:
Also, you can see this publicly.
Just to note: I have enabled dark mode, but when test this without dark mode, this is probem still: