Board Thread:Support Requests - Designing Your Wiki/@comment-39490270-20200717193645/@comment-26611127-20200717202002

Yes, that is a one of the many known issues of the Gadgets extension on UCP wikis.

This page is helpful: User:Noreplyz/UCP. Go to the Gadgets bullet under the section I linked, which lists all the current issues with the extension.

I believe these issues are on the path to being fixed, but I don't know when that will happen. You can for more information on the priority of these issues on their end and if they have an ETA on when the Gadgets extension will be fully functional on UCP wikis.