Openfire 4.6.3 doesn't display Client Version information

Hi I am only using Spark 2.9.4 and Openfire 4.6.3. Some users are shown without a client version, although if you look through Spark, then the client version is shown.

list of users

normal user

a user without a client version in Openfire, but Spark sees a client version.

Hmm, after upgrading to Openfire 4.6.6 everything was fine, but today I saw that some users dont have the client version