Hey Jonathan,
Thanks for the quick replies. I updated to the latest version, tried to add/remove/rearrange widgets on my Forums page, but it is still not working for me. I’ve checked and unchecked the Forum option under Settings -> Post Types and neither made a difference. I’ve tested the other pages and they are working properly, and I’ve made sure that I am clicking the Update button and checked that the changes are being saved.
If it makes a difference, I have Akismet, bbPress, BuddyPress, and Widget Wrangler as my only Plugins, and I’m using a template called x2 (https://www.ads-software.com/themes/x2).