I don't know if this is related or not, but it came about because of me trying the floating windows & fix in this thread.
I created "MyStandard" layout for my floating window. given that I just love Find & Replace and Regex Evaluator, I always have them docked & minimized on the right margin of my main window. I wanted them on the floater, so I added them. But I could only get F&R by floating it from the main window & docking on the right side of the floater. So I did, and had F&R and RegEx rolled up on the right with the "standard" collapsed windows on the left. When I saved & tested, I got the attached layouts. (And I can't figure out how to insert the images inline. Here's hoping)