I’m writing down this tip as a reminder to myself, but it is possible that can help also other fellow bubblers.
I was having a very buggy experience in the EDITOR, mainly in the REUSABLE properties editor, when typing a name for the property, or when composing ARBITRARY TEXT.
The annoying behaviour in the REUSABLE properties editor was that every two or three characters typed, the input field used to loose focus, not registering what I was typing.
I found that my browser (Microsoft Edge over windows 10) was the responsible of this strange behaviour.
Solution: turn off any autocomplete feature in the browser options, including personal information, password management, etc