Bug? iCal integration "Show a notification X before the event (blank for disabled)" => cannot be blank

[Karl-Bee]

how can I switch off the notifications? Version 10.0.11 (10.0.11)
once I try to leave the field blank (by deleting and e.g. pressing escape) the preset "2h" always comes back automatically
so I can't switch off the notifications.

Is this a bug or do I make a mistake?

[johannesjo]

This is on purpose, since there is a separate button above to disable/enable. When enabled you need to provide a value.

[Karl-Bee]

Where is the separate button for Notifications?

the button boxed red switches off the whole calendar, I would like to only switch off the notifications.
The notification field (2h) can be changed to another value, but cannot be left blank, 2h appears like a preset as soon as the field is emptied/ value deleted.

[johannesjo]

Ah sorry. I didn't catch the calendar part. You're right! This is a bug! A fix will be available with the next release.