UPDATE: It only seems to work when freshly logged in, lock screen, then ALT+TAB without triggering the lock screen dialog. After unlocking once, further relocking does not allow the escape. It seems to be a fix, but still with some fringe cases unresolved?
UPDATE: It only seems to work when freshly logged in, lock screen, then ALT+TAB without triggering the lock screen dialog. After unlocking once, further relocking does not allow the escape. It seems to be a fix, but still with some fringe cases unresolved?