You have template in folder foo Selected is category Documents now change to e.g. Presentation > folder foo is left, all available folders are shown I would expect foo to remain open
Same behavior on Debian 8 with all versions: Version: 4.4.7.0.0+ Build ID: 748ff17f7780232729d60ef764b0f2995b887b22 TinderBox: Linux-rpm_deb-x86_64@46-TDF, Branch:libreoffice-4-4, Time: 2015-10-22_15:51:22 Locale: es_ES.UTF-8 Version: 5.0.4.0.0+ Build ID: 356ac58e6ac6d6c37f4aaffe29099994fe118eaf TinderBox: Linux-rpm_deb-x86_64@46-TDF, Branch:libreoffice-5-0, Time: 2015-10-23_06:36:31 Locale: es-ES (es_ES.UTF-8) Version: 5.1.0.0.alpha1+ Build ID: 9a85743766e8a063d20d5f93ee88758e243397f4 TinderBox: Linux-rpm_deb-x86_64@70-TDF, Branch:master, Time: 2015-10-23_00:56:39 Locale: es-ES (es_ES.UTF-8)
Discussed this in the design chat, we want to keep the current behavior. If you want to filter by application *and* category, you need to select the application first.