This thread is a good example about stability
https://answers.unrealengine/questions/164894/umg-combobox-click-behaviour-issue.html
How can I present to a company a solution using unreal if the combobox doesn’t work well?
In the post he says “There is no current time frame for the implementation of this solution. However, there are improvements to UMG that are being implemented in 4.8. I hope that this information helps.”
The thing is that I don’t want the improvement, just the correction, improvement means they are going to change the code, reorganize it, improve it or something like that, which will cause other bugs, will need retesting and other corrections.
I think unreal versions should be changed to something like Debian release is.