Just collected my 20th bobble head and no achievement. Tried everything I could think of

- reloaded different saves

- hard booted the console & reloaded different saves

- took all the bobble heads back into my inventory & then returned them to my display stand

- can't drop them as they count as quest items ( that's another seriously annoying design choice but another matter) in order to 'recollect' them


Checked my data stats & as far as it's concerned I've collected 20 bobble heads. Have seen on a number of different websites/forums that some others are having the same issue but no workarounds or solid ideas why this is happening?


Have just popped the Hunter/Hunted achievement so they're not all glitched.


Anyone else have the same issue and/or find a fix?