SUMMARY
Dolphin sometimes does not refresh view automatically, I have to press F5.
I was getting this bug very often, so I tried to reproduce it in clean install of KDE neon (to make sure it's not my setup).
I managed to get a fairly simple reproducer.

STEPS TO REPRODUCE
1. Open up Dolphin
2. Make a new tab
3. Make sure, that the tabs are viewing a different folder (for example one in Documents, one in Downloads)
4. Close Dolphin
5. Open up dolphin
6. Open terminal and navigate to the folder viewed in Dolphin.
7. Create a new file using 'touch new_file'

OBSERVED RESULT
Dolphin does not refresh the view

EXPECTED RESULT
Dolphin refreshes the view and shows the new_file

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.100.0
Qt Version: 5.15.7
Kernel Version: 6.0.11-300.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-1185G7 @ 3.00GHz
Memory: 31.1 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: LENOVO
Product Name: 20WNS1F81R
System Version: ThinkPad T14s Gen 2i

ADDITIONAL INFORMATION
It seems that the issue is connected to initialization of tabs in Dolphin. I never managed to reproduce the bug with only one tab open. I also never managed to do it without closing and opening Dolphin again. After pressing F5 for the first time, the view refreshes automatically as it should.