Not sure if I'm doing it wrong or a bug. Survey attached created in Lime's online demo. When I remove the relevance equations from the sub-questions, only then does the "Other" option appears as viewable. I'm happy to file a bug report if someone else concurs that I'm not doing anything wrong. Thanks!
-CK
This is a bug. When there is subquestion with a relevance of 1 at the beginning the other field is not displayed. That is only happening when the subquestion relevance source is in the same group (which converts into 0 for every subquestion when the second question is rendered).
If you place your two questions in different groups you will not get this issue.