Canvas app screen flickers since release 3.21024.25
We have 2 canvas apps that have been flickering when the user hovers over the screen since release 3.21024.25 last week. The apps both have many controls and control types on the page, but have never had this issue before, and if we restore to a previous version, the issue goes away.
I would try exporting this app and seeing if the same issue happens in another environment. If you are able to reproduce this across multiple environments then it would probably be best to open a ticket with Microsoft Support on this one. I'll include a link below if you would like to go down that route. If you cannot reproduce this anywhere else then testing out if an app rebuild works would probably be the next step on that.