@Jip
Here is my whole preference file.

https://pastebin.com/yeB8LMUs

Thanks for your help!

When you just need one or two units, but you already have an infinite queue in place, you have to destroy the queue in order to make some non repeatable units.

This can be especially annoying if you got a t1 land spam setup, and then an enemy bomber flies over your base and you just need a few mobile AA.

Maybe there's a UI mod somewhere that does this?