Calibre on Linux (KDE/Dolphin) + network share

A bit of a long shot, but I guess it doesn't hurt asking.

I'm using Calibre with the library on a network share (I'm aware this is not recommended, however I'm using this for years without any problems on Windows and Mac OS). Recently I gave Linux another shot and I stumbled upon a problem with accessing my network share.

When trying to add this library which is sitting on the network share, the Calibre file explorer doesn't show the network locations I added in Dolphin in the "Remote" tab. Is there any way to convince Calibre to find these network locations without adding the shares in /etc/fstab?