When the xref buffer appears (typically for generic functions or ones with compiler macros), exiting it through either the 'q' key or space bar breaks the window layout. If I have 2 windows, each with a buffer, exiting the xref buffer leaves only one of them, being the window from which meta-point was pressed. Ideally, it would notice when it replaced a window and make it appear again. -- You only have power over people so long as you don’t take everything away from them. But when you’ve robbed a man of everything he’s no longer in your power — he’s free again. -- Aleksandr Isayevich Solzhenitsyn