Now that I got Plasma Mobile working on my Nexus 5 I've noticed quite a few glaring usability bugs. I'm wondering if there's a component at bugs.kde.org where I should report these bugs (or check if they're already filed) or somewhere else I should be reporting these issues.

Hello,

You can either report bugs here in the forum or #plasma IRC channel on Freenode, We currently don't have bugzila product (This might change in nearby future but for now we don't have it)

Thanks