Android 7.0
Galaxy Tab S2
My Colony v0.53.3
If I make a new building requiring workers, or activate one I had off for some
reason, then no one will take that job unless I first perform a fire drill.
The building needs to be on when the fire drill is initiated, or no one will take
the job so you can't perform it, then activate the building.
The problem that I have is similar but I haven't tried the fire drill thing yet.
If I click on the stats menu and go to jobs it shows that all of them are full. Yet if I click on a building that I built recently or some other older building it will show me that it has vacant jobs. Some buildings have had the same number of vacant jobs for a while now and even though I have a lot of free workers they just don't want to fill up.
(Android 6.0.1 ; galaxy A5 ; my colony version 0.54)
I have that problem too. I just manually move a colonist into my new building though. I wish there was a way to prioritize certain jobs.