Wrong War Table quest for Support Divine

So, I've been trying to get Cassandra up for Divine. Every conversation I've had with her about it, I've said she'd make a good Divine and have supported her choice. When Vivienne brought it up in conversation, I told her I support Cassandra. When Leliana mentioned her plans to become Divine, I told her I support someone else.

Yet... the only War Table mission I have is "Support Vivienne", even though I directly told her I supported Cassandra. I think this is a bug, as this mission showed up directly after talking to Vivienne. I think there's a flag set wrong, and it incorrectly gave me Support Vivienne instead of Support Cassandra. Is there anything I can do about this?