Created attachment 138737 [details]
Folder names do not match after renaming

Dolphin version is 20.03.70

SUMMARY
When renaming a folder in the left hand pane of Dolphin, which is opened as a tab in the right hand pane of Dolphin, the tab title displayed in the right hand pane is not updated. See attached image, initially the folder was named minixml (as shown in the right hand pane's tab). I renamed it in the left hand pane to miniml, which is shown in that panel, but the tab title in the right hand pane still shows minixml.

STEPS TO REPRODUCE
1. Create and folder and enter it, so that the folder name appears in the tab in the right hand pane of Dolphin
2. Rename the folder in the left hand pane by right-clicking and selecting Rename
3. Right hand pane's tab title is not updated to reflect the new name

OBSERVED RESULT
Right hand pane's tab title is not updated to reflect the new name

EXPECTED RESULT
Right hand pane's tab title should update to reflect the new name

Operating System: KDE neon 5.21
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-73-generic
OS Type: 64-bit
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 2600 Six-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: GeForce GT 1030/PCIe/SSE2