Hi Vlad,
In all versions up through 2.58 the space bar toggled the folders open or close, a feature that I really liked.
When using the Ctrl+ left and right arrow keys, quiet often I click the left arrow key instead of the right arrow key, which puts me at the top of the tree. Then I have to go back down to the folder that I tried to open and use the right arrow key. Would you please consider changing it back the way it was?
Keep up the great work!
Vic