I have an issue where only 1 of my Outfits shows the slot enable/disable buttons.

I'm sure this was working until quite recently so I thought it might have been a bug after a game update. I've just rolled back to version 3.0.5 and 3.0.4 and the issue is still present.

You can see in my !Shirt Outfit that the boxes appear and I have only the Shirt slot checked, also the Outfit is obviously selected as it has a yellow background:

However, when I select any other outfit, the boxes do not appear and there is no yellow background to indicate which one I have selected, in this screenshot, I have just clicked Arms:

I have also tried the retail-merge-10.0.5.2 branch at a3fe91e by @GovtGeek and the issue is still present.

Edit: For the Outfits that don't show the enable buttons, I am able to update the items that are in each slot by selecting the Outfit and then equipping the new item.
Also, for testing and screenshot gathering I disabled all addons except for BugSack and BugGrabber, no errors were thrown.

Ok, I just figured out what is causing this issue, and now I don't know if this is a feature or a bug. The issue is caused when you set an Outfit to Keep equipped until manually unequipped which I had done to my !Shirt Outfit, since disabling that option everything works as expected.

Interestingly, setting a second Outfit to Keep equipped until manually unequipped does not additionally grant it the privilege of having a yellow background or activating enable/disable buttons when selected.