I would like to note that this is still/again a problem in 2019 on Ubuntu 19.04. (I didn't notice it on 18.10, but maybe I just missed it.) I agree with pretty much everything that gdi2k wrote above, particularly that the following seemingly simple change would remove a significant annoyance for anyone who occasionally uses the mouse without at all detracting from keyboard-only functionality:
"Reverting focus to the Name field if a folder is double-clicked using the mouse (familiar Windows behaviour, which does not impact keyboard-using advanced users in any way)."
I would like to note that this is still/again a problem in 2019 on Ubuntu 19.04. (I didn't notice it on 18.10, but maybe I just missed it.) I agree with pretty much everything that gdi2k wrote above, particularly that the following seemingly simple change would remove a significant annoyance for anyone who occasionally uses the mouse without at all detracting from keyboard-only functionality:
"Reverting focus to the Name field if a folder is double-clicked using the mouse (familiar Windows behaviour, which does not impact keyboard-using advanced users in any way)."