Bug/Issue Achievement "A tireless task" not popping up/Unlocking

Hi, I'm having this issue where this is my last achievement and it doesn't unlock. I have all the colonist achievement, including doing 10 missions and doing 25 but the last one (50) is not unlocking.

I did more than 50 and nothing. I did some more and still doesn't show up. I'm 100% sure of this, no mistake. I saved all the reward bags in a 48 units box and had some more in the inventory.

Also some of those missions are buggy (build a house with 3 "X" furniture étc) and doesn't let me end when i build them. Kind of frustrating.

Thanks for you time ^^