First off, I’m not certain if here’s the right place to post this into.
Here we go: after that I did a clean install of 18.04(Which works superbly well btw), I have had the brilliant idea of linking ~/Documents, ~/Music, ~/.ssh (alongside other vital dirs) over on my NAS via NFS mount points. All this works fine on paper, however when I access it via Caja it seems to be lacking write permission on it.
However all/most other GUI binaries are able to write properly onto the same share, may it be LO Writer or O VBox.
In other words, after I issued your typical “sudo mount $IP/$SHARE $LOCATION” command, I can mkdir, rm, mv, via terminal. However when I do the same actions using the filemanager Caja I miss all of those options.