Hello Thunderbird Team,
Unlike the search bar in the main Mail view, you cannot focus the search bar in the Calendar view's Search bar using the same shortcut as the mail view.
The shortcut for focusing the main search bar is Ctrl + Shift + K, which doesn't work in Calendar view.
The solution is to allow this functionality by copying over the shortcut to the Search Bar in the Event View, and adding a check to see if it is open.
Alternatively, Ctrl + Shift + K could also open the Search Bar if it isn't already opened. This would be amazing for workflow, as you could use one shortcut and immediately start searching all of your events.
Thankyou!