Yes I ran them with a variety of sealants (although not Stan’s admittedly) and they always leaked out the liquid through the sidewalls in the pattern of the carcass weave, they never sealed and eventually the liquid content of the sealant was left on my floor not in the tyres. Interestingly lots of thorns were sealed no problem.
They were very cheap high rollers though and may have been single ply…
I also had issues when setting up my new clown wheels, spesh purgatory control – inflated shaken then topped up after first ride and not touched in over a month, spesh ground control control leaked out as per my experience with HRs.
I also wiped out the inside of the tyre with IPA to remove any release agent which may affect the sealing ability of latex based sealants. Who knows?