I will try to give as much info as possible in my first post.

I am using ColumnsUI, browser panel and columns playlist, those are the main plugins that I think I playing a role here. If you look at the picture below, you will see the tracks are not ordered by track number. Some of the albums that I have in my collection will be sorted correctly once I load them from the browser panel, but a lot of them mix the tracks around like in the example. I can select all the songs in playlist and choose "Sort > by track number" and then it is sorted correctly.

Does anyone have some insight on why this is and how I can fix it? I have used a lot of tag editors to try and find any differences in the files, Tag&Rename isn't showing anything odd. Any information would be greatly appreciated.