I just finished our upgrade to IPB 4 (finally), & apparently I can tag banned users in posts. Is this normal behavior? If so, is there some way to prevent that from happening? Kevin's Rules app maybe?

99% sure this is actually normal. It does sound logical to not allow this however. Members on suspension maybe, but outright banned no.

I'll move your topic to Product Feedback as it is a good suggestion.

Okay thanks Andy.

I thought I'd follow up on this. Did this get changed in 4.2? I'm now on 4.1.19.4 & I can still tag banned members.

Bumping this yet again. I'm on 4.3.6 & it's still possible to tag a banned member. Is there a reason that this can't be implemented? It makes no sense to be able to tag someone that you don't want on the site. Even if you just made it a per-group setting that could be enabled. I've moved all of my banned members into a separate group, so that would give us a measure of control over this.