On manjaro 17 with virtualbox 5.1.6 or 5.1.8 as soon as I install the guest additional driver to my Windows 7 VM i3 start resizing automatically the VM windows to its minimum making it unusable.
- It does not happen if I load a linux VM.
- It does not happen if I load the windows VM using gnome from Ubuntu.
The bug happens once you are on the desktop and might be related to the use of graphic driver/virtual graphic card not used similarly in the preceding steps.
Did not reproduce on an other computer with different configuration, it is probably hardware related