Ignore works exactly as you described, except when another member -- not you -- uses the mobile app Tapatalk. Tapatalk unfortunately does not support that extended ignore functionality of the site.

So if the member tried responding to your thread on a laptop or similar computer, they wouldn't have been able to. But since some members access and interact with our forums via Tapatalk, they can.

We've looked into fixing this, but since Tapatalk is an external app service that we're just using to help make the mobile experience easier, there was no way to do so. Sorry for the inconvenience.