Win 10. Verbum.
1. Open the Factbook article of someone with a lot of sermons in your library. (I did it with Saint Bernard of Clairvaux.)
2. Click on "More" in the Sermons section.
3. Repeat as needed, until...
4. The Factbook article goes completely blank, and then stays completely blank. (Black, actually, since I'm using Dark Mode.)
5. Close tab, rinse, & repeat.
New, functional Factbook tabs can be created while the one is blank. Changing the article that the bugged one is supposed to be showing leaves it blank, as does going to Information and closing it.
I have no idea if this bug is unique to the Beta, since this is the first time I've encountered it.