Since TB91 behaviour for opening an item in your Thunderbird Lightning calendar has changed from ‘edit item’ to ‘view summary’. Yes, you can click ‘edit’ or hit enter, but it just adds another step to an operation that should be default, or at least be a preference you can set.
So Google to the rescue… read this, this, this (text below) and this… and solve the problem just like we solved the transparent items issue.
Continue reading Skip Thunderbird calendar item summary