I updated to v99 yesterday and it broke set creation and auto equip for me. I reverted back to v98 and I was able to create sets and auto equip gear again. Please let me know if there is other information I can provide you and how to gather it.
We added behavior that automatically activates the talents associated with your setup. I think there is an issue for people who have a setup with no talents selected. On the website, make sure in the setup step of Best in Bags that you have talents chosen for all of your setups.
We’ll add a check for that in the next addon update, but this should let you get around it until then.