Quick explanation of a tiny bug there since a while.
When you are pressing a key, if you do not release it before being put into the focus mode your key will be still considered as pressed even if you are not pressing during/after the focus. I guess this is the default behavior of the focus but I believe it would be better to suppress it.
Repro:
- Press Z
- Open F8
- Release Z
- Done
It is not something important since it can be easily fixed with a workaround but it might be better to do have it naturally 
