See the attached screenshot.
version: current git
both pcmanfm and libfm are compiled with --with-gtk=3
How to reproduce:
When changing to a new dir by double click on a folder icon, the files in the newly loaded folder are positioned incorrectly.
Note that there is no horizontal scrollbar, but the icons are scrolled to left and some are partially shown.
This bug never exists in 1.0.1.
I guess it's related to the new icon size handling.