This one is pretty reproducible. Here's the steps I happened to take:
It's a bit annoying. It's safer to add buildings using Fire Tuner just to see what they do than it is to to browse the civilopedia.
- Start a new game: Deul map, Ramses as the leader, rest default
- Settle a city (probably not relevant, but a habit)
- Enter the civilopedia
- Go to the buildings section
- Click and browse this section, possibly clicking on several buildings within a couple of seconds
- Crash
It's a bit annoying. It's safer to add buildings using Fire Tuner just to see what they do than it is to to browse the civilopedia.