Dolphin doesn't update its view unless I press F5?

Help
,
9 
kio/stable,now 5.103.0-1 amd64 [installed,automatic]
dolphin/stable,now 4:22.12.3-1 amd64 [installed,automatic]

cat /proc/sys/fs/inotify/max_user_watches
249246

(Frankly, I don’t understand at all what “user watches” are.)

Also, I added some findings here: Dolphin should automatically reload views when they change