I noticed that several bugs I reported received no response, and that those were exactly those reported with a Linux platform.
They were reported with a Linux platform since that's the default when using a Linux web browser (I only use OS X for iOS development), and I forgot to change it to Mac (and also, the development OS platform is not really relevant for bugs that manifest in an app).
It seems you might be somehow filtering them out by mistake. I have fixed the platform on all my bugs, but you should fix this if it's indeed happening.