Inline style has no performer in the section legend.
The styled lyric is preserved as an unresolved voice. Choose the section voice and this styled voice to add the missing performer legend without changing the lyrics.
Example
[Verse: A]
<i>Voice</i>[Verse: A & <i>B</i>]
<i>Voice</i>The fix
This finding has no automatic fix — resolving it is a judgment call, so the workbench points at the exact range and leaves the edit to you.
Source
The guideline this rule enforces, as cited on every finding it reports:
Use song part headers verified Section headers, performer legends, and four differentiation styles