How to reproduce: select random colonist, click Change Job, select building with vacant worker spots (green footprint) and observe how this just selects the building instead of the expected action of actually assigning the colonist to the job. (the green footprint remains)
I can confirm, that manual job assignments do not work on Windows 10, V0.44.0. Tested on Human United Earth colony, Human Lunar Colony and Bug Colony.
Only "workaround" atm is to make regular fire drills to replace employees to new buildings. But this drops productivity and can easily kill everyone, if you do not have a good amount of water and food stored.
Ape Apps, LLC is an independent software development company founded in 2010 by Brandon Stecklein. Over the years, Ape Apps has published over 400 apps and games across various platforms. You can get in touch with Brandon on Twitter or by leaving a post on his wall @bastecklein