Patch notes say this was fixed but unfortunately it is not.
It's not in the default filter of all in game history on the web, but does show up if you filter for Iron Banner. It also does not show up in api calls for Iron banner statistics.
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It was wrongly added to the patch notes [quote]Unfortunately, part of the Bungie.net IB fix did not make it into the released build of the bnet api. It should be in the next release (probably next week).[/quote] https://old.reddit.com/r/DestinyTheGame/comments/109bdd2/destiny_2_hotfix_6303/j3zju29/?context=1000