Currently, I can't create a stand-alone Encounter and then add it to a campaign later. I have to be in the campaign editor and select Create Encounter to have an encounter linked to the campaign. The option to add existing encounters to campaigns would be really nice. Or within the Encounter editor, have the option to add to any campaign from a drop-down list displaying all of your campaigns. 

The other encounter management issue is that the filters for the listing of "My Encounters" only work with the very first click on one filter.  Once you've used a filter to sort your list you can no longer choose another filter option. Further testing also shows that sometimes even the first click doesn't always sort the list.

My other issues have been addressed on other posts as far as I can tell.