It seems that it's supposed to open a right-pane to show the image preview for the icon, but if you select a non-image file or folder, it opens the preview quickly then closes it so the dialog gets wider?
I'm not a developer, but this issue exists for sure. -- Select custom icon weired behavoir https://bugs.launchpad.net/bugs/210006 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs