The weekly ideas portal activity summary email has a "New comments" section, but it only ever shows the 5 most recently commented-on ideas, not the actual total count of new comments for the week. That total appears separately at the top of the email.
It can be confusing. The email shows "x new comments" at the top but the "New comments" list below only has 5 items. The label implies a full count when it's really just a highlights list, and it's inconsistent with the "Recent ideas" heading right next to it, which uses "recent" instead of "new" for the same kind of highlights section.
Rename the "New comments" section header to "Recent comments" so it matches "Recent ideas" and accurately reflects that it's a highlights list, not a total.