I can not confirm.
My two computers run Arch Linux
pc A: kde plasma 5.12.5, frameworks 5.45, dolphin 18.04, samba 4.8.1
pc B: Gnome 3.28.1, nautilus 3.28.1, samba 4.8.1
Both computers have
"[global]
client max protocol = SMB2"
in their smb.conf file.
Dolphin from pc A shows the samba shares from pc B.
I can not confirm.
My two computers run Arch Linux
pc A: kde plasma 5.12.5, frameworks 5.45, dolphin 18.04, samba 4.8.1
pc B: Gnome 3.28.1, nautilus 3.28.1, samba 4.8.1
Both computers have
"[global]
client max protocol = SMB2"
in their smb.conf file.
Dolphin from pc A shows the samba shares from pc B.