From https://bugs.launchpad.net/catfish-search/+bug/1776107 How to reproduce: 1) Open file manager (nautilus) 2) Right click on a folder 3) Open by another app Catfish is not recommended 4) Show all apps Catfish is not listed Patch is attached.
Pavel Rehak referenced this bugreport in commit b6a30dd88dbf6c97774330327d9ab186b8a7e6cb desktop: add inode/directory mimetype (bug #14505) https://git.xfce.org/apps/catfish/commit?id=b6a30dd88dbf6c97774330327d9ab186b8a7e6cb
Patch applied in the above commit. Thanks!