Topic on Extension talk:MobileFrontend

On the mobile version of my wiki the sections are missing the usual arrows at the left hand side of the headings - and while the sections can be expanded, they can’t be closed/collapsed again afterwards. Does anyone know how to fix / try to fix this? Thanks

I updated mediawiki to 1.40, updated the Minerva Neue skin and Mobile Frontend extension and it still didn't work. I then Removed the "CollapsibleSections" Extension I'd downloaded and now it works.