Getting invalid certificate for binary certificate field

I have created an LDAP schema, that has a binary certificate attribute. Looking at instances of that schema in M13 looks fine, and the certificate editor opens the certificate correctly. 

But when I look at the same instances in M14, the value is changed to "Invalid Certificate (xxxx Bytes).

The symptoms are similar to DIRSTUDIO-1108, but in M14 neither LDAP nor LDAPS works.

Entering instances in the tool looks OK:

But when committing the entry, the interpretation of the certificate fails: