Can confirm, seems to be an incompatibility with the lost cities mod.

Well, that's an unexpected problem. Please try making an issue report with the folks over at Lost Cities and see if they know anything about this.

Whitelist the Lost Cities dimension in Better Stronghold's config everyone to get the stronghold to spawn in the Overworld. It's a bit complicated to explain but has to do with Lost Cities using the overworld's noise setting which is perfectly fine for them to do.

Solution is posted above.

Please provide more info or ask for help on Discord.

I've got the same problem. When I type in /locate betterstrongholds:stronghold it doesnt find anything...

Edit: Well, never mind, I found the problem I think: When you've got The Lost Cities installed, the stronghold will, for some reason, not generate. I took out this mod, created a new world and here I am: I've got a stronghold