Solution

Version 4.2.6, JumpList is working correctly. Switching to Standard window menu results in no menu after Right Click on a button. This worked fine in the previous releases!

À l'étude

Solution
Pas un bug
I believe the issue has nothing to do with the tweaker.
If you think otherwise, e.g. the issue occurs for you only when the tweaker is running, please let me know.
Service d'assistance aux clients par UserEcho
I believe the issue has nothing to do with the tweaker.
If you think otherwise, e.g. the issue occurs for you only when the tweaker is running, please let me know.