If it’s the close gap problem, the problem is already known
There’s already a lot of topics about this subject.
This one might be the most complete:
The subject is not ignored by developers, it just a complex subject that need time to find a solution to provide something that is working properly, fast, and not hard to use/configure.
Also the bucket tool has been redesigned recently, and community was involved by developer:
All of this takes time.
And to my knowledge, if @Deif_Lou may work one day on “close gap” case I think he’s currently working on Photoshop layer style compatibility so it’s a big subject to manage before being able to do something else