Do not label individual lyric lines with bracketed performer names.
Performer identities belong in the section-header legend and are correlated through the four style slots. Removing the label drops the attribution from the lyric, so name the performer in the section header and style the line to keep it.
Example
[Verse: Avery]
[Avery] A line[Verse: Avery]
A lineThe fix
In the workbench this finding carries one control, labelled Remove the line label. The change is contextual, so it is previewed as a diff in your document first and applies only when you confirm it.
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