Thread:Project:Support desk/Collapsing tables problems after upgrading from v.1.20.6 to v.1.22.13

Hello all I have faced some problems after upgrading my Wiki from v.1.20.6 to v.1.22.13

All tables that were collapsale stopped working, I used to do so: {| class="standard mw-collapsible mw-collapsed" style="text-align:center; margin: 1em auto 1em auto; width: 760px;" ! colspan="5" style="background-color:#f7e9d4;"|Table And now it doesn't work. I tried other options like discribed here https://www.mediawiki.org/wiki/Manual:Collapsible_elements. I did so: So and this version didn't gave me a result ( How can I fix it? So there aren't any hide/expand buttons (