Mapgen Broken?

I click generate new map then nothing happens and there is no new map. How to fix?

@thewreck It appears the non-vanilla map sizes are not working when generating a map, so you'll need to stick to the original 5, 10, 20 etc. map sizes until the issue is fixed.

@BlackYps @Sheikah Just wanted you to be aware of this in case you weren't already.

This is not fixed in map gen 1.12.1