Will not follow symlinks or open a mounted drive

[djsegfault]

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Description of the Problem or Feature Request

I'm using Kubuntu (Ubuntu with KDE) and I can't drag files from dolphin onto the board, but it doesn't show symlinked directories or open a directory under /media/$USER/. I keep my music on an external hard drive and the only way to get this to see files was to externally copy files to my local drive. It would not see my music collection even when I symlinked from the drive to /home/$USER/Music.

Basic system details

CasterSoundboard version+commit:
1a84315

Operating system:
Ubuntu 20.04.1 LTS

Desktop environment:
KDE

Steps to reproduce

1. Open CasterSoundBoard
2. Open Dolphin, navigate to MP3 collection on external USB drive
3. Try to drag files over, and SoundBoard does not load that file
4. Try navigating to /media/$USER/ and drives mounted there do not show
5. Try symlinking external media folder to a directory under $HOME and it too doesn't show

Backtraces or error messages

[✍ Paste any error messages here between the ``` lines.]

[LudoBoggio]

Same problem for me, Linux Mint
Linux 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
A second disk mounted is not showing in browsing window, and dragging files from a sub-folder of this disk will do nothing. Same file moved in my main disk will work correctly if doing the same operation. Would really love to find this solved, as your software is matching all my other needs.