Last column width not adjustable [#21952]

[SimManager]

I'm trying to clean up my database and it seems like whatever view I have of the Music folder (in the left tree pane of MM), for example "All Files", or "Files to Edit->Duplicate Titles", the rightmost column cannot be width-adjusted. For example, to make it larger.
If I grab the last column (Filename, in the Duplicate Titles case), and drag it left by one slot, so it's no longer the last column, its width is _still_ not adjustable.
What can I do to make that last field adjustable?

[Lowlander]

I can reproduce, added as: https://www.ventismedia.com/mantis/view.php?id=21952

For now you can move the column, adjust it and return it back to the last position.

[SimManager]

I have been able to move the column, adjust, move back, but haven't been able to do it today.

I don't know what was different before, but it may depend on what is selected in the tree panel, e.g. All Files, vs Files to Edit???