Move to parent folder not working after opening a favourite folder

[cm630]

Test sequence:
1. Press Alt-Up arrow to open the favourite folders.
2. Open a favourite folder.
3. Press Backspace
4. Press Enter when the cursor is on .. (top of the file list)

Expected behaviour:
On steps 3 and 4: The parent folder is open.

Actual behaviour:
On steps 3 and 4: The selected folder is not changed, only in rare cases the parent folder is open.

Tested in:
FreeCommander XE 2024 Build 912 64-bit donor, win 10
Also observed in older Sw versions in win 10 and win 7.

[horst.epp]

Can not reproduce this.
Backspace or Enter on the .. entry always goes up to the parent folder.

[cm630]

This issue is present for more than an year, but I have not reported it because it is sporadic.
It happens only after opening a path from the favourites.
Yesterday it happened much more frequently, today I tried to reproduce it - it happens only with one of my favourite folders which is stored in google drive. But with this folder, the issue is reproduced evytime.