Have noticed this changes the last days/week.
If I change e.g. the font size, hit enter, then clicking on a new element in the Navigator on the left hand side in the UI, the font size input field is still in focus. I have to click inside the menu for e.g. the font size for the text size input field not to be in focus any more.
A different bug is when using Ctrl+E to add new element. If I hit Ctrl+E and type div to get a new Div element AND the mouse pointer accidentally hovers over a different element in the list, this element is selected when hitting enter, not the Div I typed into the search field.