Problems with Fullcalendar 2.0 & caching / exposed filter / no filter

I have a Views display showing a Fullcalendar. It worked nicely with fullcalendar-7.x-2.0-beta3+4-dev (see uclu.org/whats-on).

I'm now trying to set it up with an exposed filter. Because of various bugfixes you've committed (e.g. #1206742: Contextual filters break Ajax views: Ajax date arguments should be replaced with hidden exposed filters) I've upgraded to version 2.0 first.

Now, unfortunately, the normal load of the calendar (before applying any filters) doesn't load any events at all. So that's possibly a support request - is there anything I should have done when upgrading?

After adding a filter (a taxonomy term "dropdown", allowing multiple selections, not "required"):

• with caching enabled, any selection on the exposed filter always returns the same result as the first selection. So that's probably a bug?
• with caching disabled, applying selections on the exposed filter returns the correct results (yay)