Personally? I run it through Separately Stated Income and Deductions as a passive item. I'm unaware of any good method for adjusting the 8582 for things like this or other less-common situations.

If I were feeling particularly unhappy with not having the amount on Schedule 1 / former Line 21, I might be inclined to enter it both places, then back it out with a kludgy workaround, or just disclose the presentation on Form 8082.