Is there a cap for mastered dupes in one job?

[Parusoid]

I cannot assign one dupe to building job. I double checked and he does not have any perk that forbid building, he has Trypophobia though, but it makes him unable to Dig, not build. Is there a cap because I already have 5 dupes who mastered that job (but are not currently employed in that job).

[Kasuha]

There used to be a limit but that was lifted long ago. Check if your game is updated? Almost all of my jobs have 8 masteries (since I only have 8 duplicants in my colony) so 5 is certainly not the limit.

[magei]

As can be seen in the picture below, It's at least 32 dupes