Rated 3 out of 5 stars

After applying the Thunderbird 55.0b2 update the Calendar in Montly and Multiweek view are no longer working. Disabling the Calendar Tweaks plugin all works again.

This review is for a previous version of the add-on (6.3). 

This problem is caused by updates to the calendar bindings in Thunderbird 55.0b2.

This means that modifications will have to be made to the corresponding bindings in Calendar Tweaks.

This is quite a lot of work and so won't be done until a final (stable) beta version is available.