We use p12 keystores with root-CA certificate, sub-ca certificate and private key + public key - all in a chain
KSE 5.2 didn't show the ca certificates, only the keypair
KSE 5.1 shows only one of the ca-certificates (it is also a bug, but better than 5.2)
Th p12 file works well.
both certificates use the same entry or friendly name "CA certificates" maybe the problem?
Cheers Jan