groupfolders 18.0.5 broken after nextcloud upgrade to 30.0.2

[jpchev]

Steps to reproduce

1. install group folder 18.0.5
2. upgrade Nextcloud from 30.0.0 to 30.0.2

Expected behaviour

no regression

Actual behaviour

in the group folders UI, lines appear doubled and clicks result only in javascript errors

Server configuration

Operating system: kubernetes

Nextcloud version: (see Nextcloud admin page) 30.0.2

Group folders version: 18.0.5

Updated from an older Nextcloud/ownCloud or fresh install: update from 30.0.0

[provokateurin]

I am unable to reproduce this problem, both on 18.0.5 and the latest master branch.
For a short time there was a bug in 18.0.4 (#3414) which could be a possible cause?

Please make sure you are really using 18.0.5 and send some clear steps to reproduce.
Please also include the server and browser logs (remove any sensitive details), so I can get a better idea of the problem.