Bulk items I list not showing up on trade site (normal items show up just fine)

As the title states...I'm having issues where items that are searchable via the "bulk" trade page (in this example, fossils) aren't indexing on the official PoE trade site despite being listed in a public tab with a b/o. Changing instance, waiting...none of the standard "troubleshooting" for making stuff show up works. It doesn't appear to be an issue with regards to the trade site being slow either--e.g., I listed an amulet for sale like 10 minutes after the fossils and that shows up on the trade site just fine.

This is only the second time I've tried to list bulk items in Expedition--I tried 2 weeks ago and this exact same thing happened. I just shrugged it off at the time figuring it was a website issue, but I don't think that is the case anymore. It's really annoying as I'm at the stage I actually want to liquidate some of the things I'm not using like fossils, but I can't sell them effectively since they literally won't list on the trade site, and for stuff like fossils the rates you get if you try to sell to people with buy orders listed are horribly disadvantageous for some reason. So I'm basically stuck in a spot where I can't liquidate my bulk items effectively. Is there any way to fix or troubleshoot this? I've been playing since 2013 and this league is the first time since the public stash tab trading was implemented a long time back where I've run into this issue.