In creating a rogue at 11th level and choosing one of my background skills for Expertise, I'm getting the following:
It only seems to happen with background proficiencies whether I use a custom background or standard one. Repeated a couple of times so definitely a bug.
In creating a rogue at 11th level and choosing one of my background skills for Expertise, I'm getting the following:

It only seems to happen with background proficiencies whether I use a custom background or standard one. Repeated a couple of times so definitely a bug.
Yep, it is a bug. Reported to the staff. Thanks!
This should be fixed with the new update we rolled out today. Let us know if you're still having issues.
Twitter: @thesqualls
XBL Gamertag/PSN Name: squale71
I still get this error.