treeview hides folders if the filter has an absolute path starting with ^ and ends with /

Because of performance reasons, the treeview doesn't know what the subfolders contain, so that each subfolder is displayed even if it is empty.
If you use a filter in the treeview of the jobs, job chains or orders tab with a regular expression that describes an absolute path and starts with ^ then all other folders are hidden.

Example:
You have jobs:

• /test/1/1
• /test/1/2
• /test/2/1
• /test1/1

A filter "^/test/1/" hides the folders /test/2/1 and /test1/1
A filter "^/test1/" hides the folder /test