The newly introduced "original artist" (TOPE) tag doesn't use the "multiple tag splitter". According to the spec
TOPE
The 'Original artist(s)/performer(s)' frame is intended for the performer(s) of the original recording
Additionally when entering ";" separated entries they do NOT show up as separate entries in the Library Explorer
as can be seen in the following screenshot
Can this be implemented like the standard artist/composer/conductor ?