From playing some games with the dev team, it seems that they're operating on a bare bones crew, some of which don't even know how to play. Their budget is probably incredibly tiny, and I'd bet that there's a layer or twenty of paperwork for every bug that gets fixed. Code isn't as simple as just clicking a button or two. Coding some more advanced and complex card interactions can take a lot of work.
You've also got to consider that the dev team is running this as a BETA. While Google has gotten everyone used to the idea that beta=release candidate; a beta is actually still quite buggy in the real world.
They've said several times via the forums on tcgo that there is a full release that will happen sometime mid 2012. Until then, I'd imagine the bugs will be squashed at a glacier's pace, and NOT one under the movement bonus of Kyurem.
They do have a "known issues" thread, located
here. They work on fixing the bugs listed
here, but progress is slow. If you find something not listed there, do your part to curb cheating by posting it there.
TL;DR: Do not expect release-version speeds of patching for a beta-version product.