reproduced at: demo url
Here is what we see:
The columns are missing.
Note that when removing comparison mode again, the state will be also broken then for non-comparison mode, and not show any column also.
Workaround: currently it's possible to display the columns as expected with a few extra clickks:
Display simple table
Expected to see the columns like in non-comparison mode.
I'm not able to reproduce that. For me the table is scrollable to the right and all columns are there.
Might those columns only be hidden from visible space and related to #15053
works for me too