The messages Logentry-growthexperiments-setmentor and Logentry-growthexperiments-setmentor-no-previous-mentor seem to have incomplete GENDER support.
Their qqq currently says:
- $1 - user who performed the action (usually linked to the user page)
- $2 - unused, or user who performed the action (to be used with GENDER)
- $3 - the affected page (usually linked)
From the qqq it looks like it only has GENDER support for the user who performed the action. It also needs GENDER support for the new mentor, the previous mentor, and the mentee.
Logentry-growthexperiments-setmentor appears to have support for the GENDER of the previous mentor, but it's not documented in qqq.