Yes, this has also been my experience with PT since I started to use Dorico. I always wanted to report it but as Leo I just got used to it.
So thank you sammys!
For me it is weird because when I want to edit a dynamic, I can double click and change the content in the popover.
When I want to do the same with a playing technique (changing upbow to downbow, or trying out between different mutes), I always need to delete the old one.
As this kind of changes are quite common in arranging and composing, I think the request is not ungrounded.