I have had this problem for a very long time. When I scroll down in the voice actor screen, pictures of already shown characters get placed again, in wrong places. Sometimes just for a short moment, but often it stays there.
On the attached screenshot you can see that Takagi's picture is right the first time, but the second season and the OVA have pictures of random character's from an upper part of the list.
System
1.9.5.4AndroidDescription
I have had this problem for a very long time. When I scroll down in the voice actor screen, pictures of already shown characters get placed again, in wrong places. Sometimes just for a short moment, but often it stays there.
On the attached screenshot you can see that Takagi's picture is right the first time, but the second season and the OVA have pictures of random character's from an upper part of the list.