I was just checking over my page of themed pets I was trying to get rid of to double check prices, but then realized that none of them were marked as for sale or breeding. I had set all of them to be both for sale and for breeding, but neither of those icons were marked under them, and when I checked in advanced search none of them showed up. I tried confirming the prices again, but nothing changed. When I changed some to only be for sale and not breeding though, they finally appeared as for sale.

I fidgeted with it a little more and it seems that having a breeding price set is the issue. I tried setting one for only breeding, and not for sale, and it still appeared as marked for neither, and when I checked its prices again they were both set to zero, including the price I had set for breeding.

Another note: this does not appear to be affecting my non-themed pets, as some of those are still marked for breeding.

For now I'm just going to set them to sale only.

What pets are you specifically trying to set breeding prices for?

All the ones in this tab, but I set most of them to sale only now so that it would work. I have set 6966689 and 7067531 back to sale and breed though so you can see what it looks like. (In the stable tab they should be the two in the top right, and appear as the only ones not marked as for sale or breeding)

Ah wait. Nevermind. It seems to be working now...
Well now I don't know if there was actually anything wrong or if the problem was just on my end...

It's fully possible I was simply clicking or entering something weirdly, or just that my wonky little computer was acting up more than usual. Sorry.

No worries. Let me know if the issue persists or if you figure out a cause.