Reproduce: 1. Open Dolphin 2. Navigate via cursor keys to a file 3. Press F2 to rename (the actual goal was to copy the filename) 4. While the filename is still in edit mode: Press Alt+Tab to switch to another window (to paste the filename) 5. Press Alt*Tab again 6. Trý to navigate to the next file via cursors keys. => Nothing happens (actual) / EXPECTED: Keyboard navigation works WORKAROUND: use the mouse to click somewhere in the window to make keyboard work again.
Can confirm.