FF 76 - no multirow displayed anymore

[Cuervino]

My FF automatically updated from 75 to 76 yesterday evening before shutdown.
When opening FF this morning, bad surprise: only 1 row is displayed instead of 3.
I think this line is no longer valid :
:root{--multirow-n-rows: 3}

[MrOtherGuy]

Did you try the latest version of the multi-row_tabs.css? It should work.

[Cuervino]

Yes, it worked.
My bad, I had the version from December 2019 (and additional customization for having favicon on folder bookmarks.)
I checked, few discrepencies that I didn't fully understand.
I should have tried the last version before anything else.
Sorry for the request, thanks for this very nice job :-)