Language Issue (Browse conference rooms - view room info)

After Creating a room~

“Browse conference rooms” (spark_01.JPG) -> view room info

“View Room Information” (spark_02.JPG)

I can’t see the name(Korean) at “users in room”… and just can see “□□□” like this…

Is it encoding problem?? or bugs??

How can I fix this problem in sourses… ?

And I changed languages at Actions Menu… to Korean~

After that “users in room” is changed to “□□ □□ □□□”… T-T (spark_03.JPG)

Can anyone offer some resolusions for this problem??

(My Spark version is 2.6.3)