I'm having a problem understanding what is going on with my app in App Designer tool. What is happening is that after I save file and re-open it in a new tab (or restart the tool and open the file), component layout (how components are arranged on the grid) gets messed up randomly or even some components get deleted and some added on random places.
I'm not sure whether this is a bug for this version (I'm using 2019b) or I'm doing something I shouldn't.
This is as it should look in App Designer (after saving, before closing):
And this is how it looks after re-opening: