I've starred a load of Android bugs in that tracker; and over the last few weeks, loads of them (many tens) have been flagged Obsolete.

Many of them are absolutely not obsolete; they're as relevant in 5.0 as they were when they were raised.

It's great that they're cleaning up the issue tracker as if they might actually use it (or maybe it's preperation to move to GitHub, as many other Google projects have been), but it sucks that they're just blanked fobbing off a load of relevant cases :(