I'm working on a skyblock pack and I added in Pam's & AA's seeds to the dirt sieve registry. I know that might be asking for a lot, but I was picturing something like loot-bags when you'd view any given seed in JEI, where it cycles through 'pages' of the possible results, instead, I get this:
https://imgur.com/a/Bxy4Wxl

A pretty hackish attempt to split up items so that JEI will page them.

Works for now.

A fix has been merged and uploaded to curse, Version 0.3.7.

I think a similar enhancement was added to the compost JEI compat relatively recently, I'll take a look at implementing a similar change to the sieves ... and check the crooks.