Created attachment 163537 [details] Nested subfolders showing wrong SUMMARY See image. Every folder would have folders from 2 to 10 in them. If all are opened, then base folder is closed and opened, the last two folders dont expand properly. STEPS TO REPRODUCE 1. Create a folder called test 2. Create folder inside test called base 3. In base folder, run following commands: mkdir -p 1/2/3/4/5/6/7/8/9/10, mkdir -p 2/2/3/4/5/6/7/8/9/10, mkdir -p 3/2/3/4/5/6/7/8/9/10 4. Open detail view in dolphin so that you're inside test folder and see only base folder. 5. Expand *all* folders 6. Toggle the arrow on base folder off and on OBSERVED RESULT See attachment EXPECTED RESULT The treeview would build correctly SOFTWARE/OS VERSIONS Operating System: Fedora Linux 39 KDE Plasma Version: 5.81.80 KDE Frameworks Version: 5.245.0 Qt Version: 6.6.0 Kernel Version: 6.5.12-300.fc39.x86_64 (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 15.5 GiB of RAM Graphics Processor: AMD Radeon RX 6600 Qt Version: ADDITIONAL INFORMATION Admittedly this is quite niche issue, but it may cause other issues, especially since sometimes the nested arrow can appear next to a file instead of a folder.
If one toggles base folder again, it shrinks even more.
Dolphin version: dolphin 24.01.80
Seems the index for the folders gets reset and they get opened in wrong order.
Created attachment 163560 [details] After rebuild After rebuilding it now closes the 1 and 2 folders when base folder is toggled, but keeps 3 expanded. Only thing that changed was translation files. This is better behavior, at least. Optimally all folders would expand like previously.
Hmm, I'm not able to see as issue with those steps.
I can still reproduce the issue, but it happens very randomly. Same steps as above should work though.
This bug happens only if your dolphinrc has anything in [PreviewSettings] For example: [PreviewSettings] Plugins=audiothumbnail
A possibly relevant merge request was started @ https://invent.kde.org/system/dolphin/-/merge_requests/672
Git commit b1f9c2e5c90548f391477fa17889ff8d1abf8f53 by Akseli Lahtinen. Committed on 08/12/2023 at 11:59. Pushed by akselmo into branch 'master'. Do not reset expandability when loading previews Fixes a weird bug with the treeview if one has ``` [PreviewSettings] Plugins=audiothumbnail ``` in their `dolphinrc`. It can be any PreviewSettings plugin, as long as there it at least one. Check the bug report for more, but in short, the bug is reproducible like this: ``` create folder tree inside a test folder with mkdir -p 1/A/B/C/D/E/F/G/H/I mkdir -p 2/A/B/C/D/E/F/G/H/I mkdir -p 3/A/B/C/D/E/F/G/H/I make sure you see the test folder, and expand it expand folder 1, no need to expand all sub folders expand folder 2 collapse and expand test folder 3 loses its expansion arrow if all folders are expanded, only 3 keeps its order if 1 and all its subfolders are expanded, then test is toggled, folder 2 also loses its expansion arrow ``` Video of the bug:  The path to the bug is: `KFileItemModelRolesUpdater::slotPreviewFailed` -> `KFileItemModelRolesUpdater::applyResolvedRoles` -> `KFileItemModelRolesUpdater::rolesData` -> `KFileItemModelRolesUpdater::startDirectorySizeCounting`. This causes Dolphin with preview plugins enabled trying to count the directories again, and the data gets reset even if there is something there. This then resets the `isExpandable` flag and that breaks the treeview, causing all kinds of issues, like being able to expand non-directories and makes things out of sync. M +0 -2 src/kitemviews/kfileitemmodelrolesupdater.cpp https://invent.kde.org/system/dolphin/-/commit/b1f9c2e5c90548f391477fa17889ff8d1abf8f53
*** Bug 479240 has been marked as a duplicate of this bug. ***