Sim can't read or do homework.

Hi, since the new update, my sim has been unable to read a book or complete homework for university. 

I don't have any mods or CC, and tried restarting the game to no avail. 

The sim just stands there with the book in hand, rather than completing an action. The action bar never begins or completes unless deleted. 

Is this something other people are experiencing or could it be my laptop?