Weird error on move to NAS/Server - System.IO.IOException

[HerrWallen]

Hello, long time user, first time poster.

I'm having a weird issue that I can't figure out, hopefully someone here has some ideas.

When I try to move files back to my server (via samba) I get an error that states the files already exists despite them not being duplicates.

Heres a paste from my logfile:

2020-11-21 01:00:36 - 10.0.19042.0 - 3.4.7628.34032P - System.IO.IOException: Det går inte att skapa en fil som redan finns. [\\HOME\musik\Jonson\Mindlook\]
   vid #=znhvfeMYUqOMBDSvRYE$M2iY=.#=zUwP_71fjtvFm.#=zI2YS4DI=.#=zGN8$DzQ=(#=zgDb_8P4OGP5Fy_1nP0xx14k= #=zxCfwWBg=, Boolean #=zq3lak4jnzts6)
   vid #=znhvfeMYUqOMBDSvRYE$M2iY=.#=zUwP_71fjtvFm.#=zEf5yCjQ=.#=zXZKzPtU=(#=zMnhegC3cZoFSS$BHYQ== #=zqQ6fTgWcFrMP, #=zMnhegC3cZoFSS$BHYQ== #=zWbFVwI4m9Bk5, Boolean #=zq3lak4jnzts6)
   vid #=zsGt5Hl_ti2aovfv6V6Fikts7VjDY.#=zlt9ePtU=(#=z8zWgg0kPJMuihYsbFlyJdUCpf$gB #=zy0oVzZE=, #=zS39V9tNScKqMOwlsJxqh14s= #=zVAmP6tU=, #=zMnhegC3cZoFSS$BHYQ== #=zWbFVwI4m9Bk5)
   vid #=zzjmoawY9ykc_ryoIL8FV6U4=.#=zlt9ePtU=(#=z8zWgg0kPJMuihYsbFlyJdUCpf$gB #=zy0oVzZE=, #=zS39V9tNScKqMOwlsJxqh14s= #=zVAmP6tU=, #=zMnhegC3cZoFSS$BHYQ== #=zWbFVwI4m9Bk5)
   vid #=zUjD$PezkUWN1KVLRxuc$1Qc=.#=zlt9ePtU=(#=z8zWgg0kPJMuihYsbFlyJdUCpf$gB #=zy0oVzZE=, #=zS39V9tNScKqMOwlsJxqh14s= #=zVAmP6tU=, #=zMnhegC3cZoFSS$BHYQ== #=zWbFVwI4m9Bk5, #=zQ2QJdZN7iGU33d_I6rCRjEnP13I7 #=z78DAhvc=, #=zMnhegC3cZoFSS$BHYQ== #=zo2DumnwSB6i2Y$cVocCcpzQ=)
   vid #=zUjD$PezkUWN1KVLRxuc$1Qc=.#=zVqlpOUUc1oDx(#=z8zWgg0kPJMuihYsbFlyJdUCpf$gB #=zy0oVzZE=, #=zQ2QJdZN7iGU33d_I6rCRjEnP13I7 #=zbVaNQimtaY7M, #=zS39V9tNScKqMOwlsJxqh14s= #=zVAmP6tU=, Boolean #=z68PrV$M=, #=zMnhegC3cZoFSS$BHYQ== #=zo2DumnwSB6i2Y$cVocCcpzQ=)
   vid #=zFsyB37Dtuw1Gx1zp5R$pvYXr9liH.#=zNUpdgWFM3heM(Object #=zvm9dOLI=)

The error message is in Swedish (my system language) and says something like: Can't create a file that already exists.

I'm running on a Windows 10 desktop for MusicBee, I've tried the "store" install (3.3.7491 Store), a portable install (3.3.7491 P) and the 3.4 beta (3.4.7628 P).
The server runs Ubuntu 20.04 with a basic Samba-setup on a ZFS file-system.
The share-setup looks like this:
[musik]
path = /pool/media/musik
guest ok = yes
read only = no

I have 777-permission on the share and are running a valid user.

This usually won't be a problem if I only move a single (or a few) albums but when I try to move more than 8 ~ 12 it's more likely to happen.
It happens if I "move to library" or "move to an organised folder" on the server. When it happens, restarting the operation ususally moves the remaining files as if nothing ever happened.

A regular file-copy operations from Windows is rock-solid, no problems at all, including several thousand of files.

I'm pretty sure that this is not a bug within MusicBee but I can't pinpoint the cause of this problem and would be very greatful for any ideas/tips/help.


Many thanks in advance // HerrWallen