Calendar sync

[MGRCommandes1]

In thunderbird, cloud calendars are synchronized  periodically. This is fine to get synchronized to a calendar modified by another way than Thunderbird. But not to synchronize the cloud when a calendar is modified by Thunderbird itself. When, for example, an appointment is added to such a calendar on Thunderbird, it will be synchronized on the server only next time Thunderbird is fully synchronized. This can be too late, for example if the computer is suspended before the moment when Thunderbird is synchronized. What calendar applications usually do is to get synchronized when started, then periodically, and as well when the calendar is changed. This last synchronization event lacks on Thunderbird. The workaround is to synchronize it every minute, so that the probability of failure is low, but the best would be to synchronize it (even optionally) each time a change is made to the calendar. This is what other calendar software do (see OneCalendar for example).
Best regards.
MGR.

[Jon]

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[Espressoman]

Related to this, I am only using the Calendar feature of Thunderbird running under Linux Mint and have it configured to open on start-up. It immediately attempts to synchronize via my IMAP (Gmail) account which would be fine if the OS had actually completed establishing the internet service. However it usually hasn't so my Calendar is totally blank until a subsequent resync occurs or I click on the reload/resync icon. Having a blank calendar suggests something is broken when in fact it's just a sync timing issue.