I think somebody there has broken the F6 keyboard shortcut in v2.0.998.32 and next.
mb
From the changelog:
Added key shortcuts:
F4: Opens history list (was F6 previously)
Ctrl+G: Go
Shift+Ctr+L: Opens new Local Browser and goes to the local directory if defined in the favorite item
Ctrl+L: Opens new Local Browser
Alt+Left Arrow: Go back
Alt+Right Arrow or Backspace: Go forward
Enter: Open selected file (was F4 previously)