When using keyboard shorts like Ctrl + X to open ChatGPT (or whichever AI you have integrated into FF) in a vertical window alongside whatever webpage I may be on, closing the AI vertical window will also close side view tab i had open as well. The vertical window occupied by ChatGPT is already mapped to the size of your side view tab, so it's unfortunate that the window doesn't simply lay overtop the side view tab like it appears and ends up closing both. Would love to see this be addressed as it can be quite cumbersome have to reopen & reorient side view if i ever choose to consult the AI.
