Settings: I have 'Open Google Calendar in the Same Window' deliberately unchecked.
Problem: When users get a new tab with an event for their calendar, the popup-blocker suppresses it. There is no problem for users who manually allow it through, but it's a problem that it gets blocked by default, as most users don't even notice.
I have tested this on 2 PCs, both running Chrome with AdBlocker on default settings. Both were blocking the Appointments+ calendar tabs by default, so I'm hoping someone can point me towards a solution.