There doesn't seem to be automatically timezone adjustment or a way to choose summer timezone.

For example, I'm in the UK now. It's using British Summer Time (GMT+2) at the moment. I cannot change my timezone to that. There's no option in setting to enable timezone adjustment.

When I synchronise my events to Google calendar, the time displayed is wrong.

This affects users who live in areas which deploy summer time (at least US and European countries) and synchronise events to Google calendar.