Reference designator, getting .Designator2

After building a new PC and re-installing everything, I've gone to make some parts.

So using version 25.3, I've generated the build scripts for some resistors - my go to sanity check that I have the settings right.

For some reason, the reference designator text is appearing as .Designator2. I am looking to get the designator onto the assembly outline layer, sized and centered appropriately. I can't seem to figure out why I am getting the 2 suffix, I don't remember that before.

No doubt I've missed something obvious, but I can't find it.

I didn't realise Altium would take a .Designator2 when creating assembly/draftsman outputs. I'll give it a try tomorrow. Is this a new feature?

I've been using PCBLibraries for a few years and not seen before.

I'm rebuilding my 5 year old database library, trying to get everything into a common format. It's grown organically over the years. If I only knew what I do about Altium back then!

The docs just say..

When I'm back in the office tomorrow I'll see if Altium treats them both the same and replaces them with the actual component designator when generating the outputs.