The other night I was using the “Focus Control” and it kept disappearing. I have also noticed this effect with other windows including the sequence window. I did some work with Spy++ and found an interesting situation. Any of the floating windows I checked did not have a parent window set which is why they kept disappearing. When the windows are docked then they do have a parent window. I don’t know if this is a deliberate design choice but it is very annoying to have windows disappear at inopportune times. Please consider having all the floating windows have the main window as a parent. I think you will find that SGP will behave more like users expect. The floating windows will not be constrained to the main window but they will remain in front of the main window and not disappear unexpectedly.