Calendar move Appoinment not working

Hi
Using emClient on Mac, Drag and Drop Appointments in Calendar doesn’t work. Are there any settings or is this a bug?

I can personally “move events by drag and drop ok” using a eg: Gmail IMAP Calendar and a Outlook IMAP Calendar using the latest eM Client Mac V10.3.2412

Has this just started happening ? or have you never been able to drag and drop events ?

Also what version of eM Client do you have & Mac OS ver, and what account type is it ?