Topic on Extension talk:CollapsibleVector

Fixed in https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/CollapsibleVector/+/444030/

Recently I switched my MediaWiki from branch REL1_30 to REL1_31. Today I noticed I can't expand the collapsed items in the sidebar menu. To solve this I switched Extension:CollapsibleVector back to REL1_30, while MW and the other extensions are on REL1_31. Currently this working for me, but it is ugly solution.

Does this behaviour is a bug or some additional settings could be applied?

Same Problem here and the suggested fix worked as well

Fixed in https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/CollapsibleVector/+/444030/