My Huntress's Bling-O-Midas, kept from before the Trials update, still tries to perform its special functions (gold slime arrows and gold spray on right-click charge), but they do nothing. The spray comes out rotated 90-degrees (sprays vertically instead of horizontally) and deals no damage.
The weapon has a filled-in blue-dot which would indicate a locked passive shard, but no such shard exists in it.
I figured as much, but just to be clear, the bug is that the Bling-O-Midas is still attempting to function as though it still had its unique passive(s), when it doesn't anymore. It's also showing a filled shard slot (as though it had a locked shard), when there are no shards in it.
Some Incursion weapons and their respective passives/Shards have been removed in this patch and will be re-introduced at a later date.