I've found this bug on Ubuntu 17.10 with Thunar version 1.6.12-1 yesterday, and after a bit digging found the root cause in the gio part of glib:
https://bugzilla.gnome.org/show_bug.cgi?id=787731 They have found it using Nautilus earlier and created a fix, which was released in glib-2.55. Unfortunately the newest libglib2.0-0 available in Ubuntu (artful and bionic) is 2.54.1-1ubuntu1 which doesn't contain the fix. ** Bug watch added: GNOME Bug Tracker #787731 https://bugzilla.gnome.org/show_bug.cgi?id=787731 ** Also affects: glib2.0 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1332623 Title: Thunar behaves inconsistently with USB flash drive FAT32 partitions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/1332623/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
