The calendar I had before the upgrade to 128.3.0esr (64-bit) worked fine. After the upgrade, when an event was displayed giving the date/time reminder popup everything appeared normal. If I tried to edit the due date/time within the popup everything was normal, and data saved OK. Now the problem, if I clicked on the main calendar tab, the app would go directly to not responding. Same thing if I do "Alt-3". I tried all the different methods to bring up the calendar. All ended as not responding. Does anybody have the same problem?