sorry, what does QA mean? is there likely to be a fix in the near future? should i stop working on Ai for now and concentrate on other parts of my project? and any idea when the behaviour tree will come out of the experimental stage?
I’m sorry, should’ve been more specific: QA stands for quality assurance.
Hopefully this bug is already fixed on our side in most recent version and that’s why it was not occurring for me, even though steps you’ve described says that it happens all the time.
Hotfix for build 4.2 is currently being prepared and should be distributed via launcher as an automatic download early next week. For the time being, please focus on different part of your project 
As for behavior trees and their experimental stage, we’re aiming to finish editor usability pass for 4.3 release.
Ok Thanks, Not feeling to confident but we shall see. thanks again for you’re help and the info, ill post here again after the update.
this maybe a tip for reproduction - I’ve converted project from 4.1.1 (haven’t had any animation trees and haven’t enabled it in experimental options). After upgrading created Tree and now I need to create my tasks again in Behavior Tree when I load the editor again.
Finally some good news! I built the editor from the source (it was tagged as version 4.2.1) and indeed, no more problems. So hopefully it’ll be fixed for everyone after the hotfix next week!
made me smile
I’d like to follow up on this matter, as I’m facing the issue ever since 4.2. We were forced to use the source and build from there which solved the problem, and we could accept that as temporary solution. However, we want to stay away from source as we don’t need it, and it’s alot simpler using the launcher to work with folks remotely.
We upgraded to 4.3, and unfortunately the problem is back. It seems to me that for some reason, this never happens if you use the source code.
We’d appreciate if someone can help us with this.