I will pay $50 to whoever fixes this papercut

It has been a long time without a responsive calendaring application in Linux, and it's time to get one working. I will pay $50 to whoever fixes the following papercut and publishes a stable release update for it:

Calendaring in Ubuntu

There is a recently developed calendar application called California that could easily become a good standard. The problem is that it is in its early stages of development and it has some minor usability bugs on its interface. So I have made a list of which those bugs are, in case someone want