I just updated from 10.x to 11.3, and discover that a very aggravating behavior in the Delphi IDE remains unfixed, and I'm hoping someone can tell me some setting that gets rid of it, or some workaround.
Assuming a new VCL project, with the main IDE (Window 1) set to Form Designer ("Design") tab, and a second (source code) editor open in Window 2.
Now, clicking the Form Designer (Window 1) causes Window 2 to hide its Navigation (Types/Methods) toolbar.
Now click back to the editor in Window 2, at the location in the text you want to edit. That simultaneously causes the Nav toolbar to reappear, displacing the edit control downward, and turning your click into a drag, selecting 2 or 3 lines of text.
Not only is this unwanted, but if not noticed will lead to those lines of text getting deleted when you start to type, which is obviously the very next thing you expect to be able to do after clicking at a particular location.
I would appreciate if someone would chime in with a way to escape from this booby trap.
If you are not really using Navigation Toolbar you can disable it in Tools > Options > User Interface > Editor Options > Display
Another thing I noticed is that if you don't click directly on a Form or component within design-time window but instead on a white space first then the Navigation Toolbar doesn't hide. So this might be a workaround if you are using Navigation Toolbar often.