FreeCommander Forum

I suggest to add the feature similar to main splitter, double click the tree splitter to resize the tree.

For tree it could be 25% and 75% for active file list.

When you talk about this features you have to show the versioning where you are talking about.
Anyway in FreeCommander XE 2017 Build 740 32 it can already resize double panels in 50% | | 50% by double click on the left border on the center bar or through CTRL+ALT+F2

I suggest the same feature - double-click the splitter to set size to 25% also for the Favorites tree and for the Quick viewer.

Perhaps with the ini options to change the default values, one for each (tree, fav. tree, quick viewer), default value could be 25, custom values could be 0 - 100.