Previewing items in the Marketplace not working 100%
 

I'm not able to ctrl click on the pet's to preview what they look like. I asked a friend who does not have profitui, and he's able to preview them with the default ui. =(

Are you examining them first and then ctrl-clicking the icon in the examine window or are you ctrl-clicking the icon in the item list or the detail page on the right of the window?

I assume the OP is talking about the summon pet ability scrolls/skills. To my knowledge, those have never been previewable, since the item does not act like a placeable housepet but rather adds a skill that then summons the pet.

I thought about that too, but if that were the case then their friend wouldn't be able to do it in the Default UI either unless there's a miscommunication about what items they are trying to preview.

Yeah, miscommunication is my guess. I certainly can't see the ability-granted pets via ctrl-click.