Speechbubble issue: Artifacts appeared when shadow is on and transparency is used

I am closing this, due to a lack of response, the sprint was already blocked to long while waiting for people to respond.

We will see if there are any bugs when we bring out our release candidates.

The artifacts are more due to a transparent fill...
I made some changes which make it more bearable, to remove all the render issues I would need to invest a LOT of time which currently would not make a lot of sense.

I hope this is enough for now, you probably barely would notice it but the edges are cut a bit strange.

The problem should be completely gone with the newer editor we are working on.

The changes should be available in the version here (not final!!): https://github.com/greenshot/greenshot/releases/tag/Greenshot-UNSTABLE-1.2.9.13

Maybe you can have a look, and report if this suits you?