Files: folder tree in the navigation does not follow the folder opened in the main view

Is your feature request related to a problem? Please describe. In the Files app, the folder tree in the left navigation does not follow the folder that is open in the main view. When navigating in the main file list, the tree does not expand along the path to the current folder and does not highlight it, so the left navigation gives no hint where you are. Observed on Nextcloud 35.0.2 (Files app 3.0.0), "All files" view, with the "Folders" tree shown in the left navigation: 1. Start at the root. The tree shows the 8 top-level folders. 2. Open a folder in the main list (level 1), then a subfolder (level 2), then another subfolder (level 3). 3. After each step the tree still shows only the 8 top-level entries. No entry is expanded and no entry is highlighted. The main view is three levels deep. I only tested navigating in the main "All files" view. The tree links point to /apps/files/folders/<id>?dir=..., so using the tree switches the main view to…