If add an Event to the calendar by clicking in the day on the Calendar and choosing Event - the date defaults incorrectly due to some confusion between UK format dates and US
For Example - I click on the day for 6th November 2018 - normally when selecting create event the date of the event would be filled in as 06/11/2018 - however for about a week it has inverted the date so instead of selecting 06/11/2018 as 6th November 2018 it selects as 11th June 2018 (i.e. interpreting 06/11 as a US format date)
If I pick a day number greater than 12 - say 30th November 2018 then the date becomes even more wildly out - in this example it will try and create a calendar event for 11th June 2020!!!
This is very annoyig and it is easy to accidentally create an activity for the wrong date - this occurs in internet explorer
