We are using version 2.2 update 1, because we are very close to a release, and are unable to update at this time.
You are correct, when I hover over data items, I cannot see the values. I haven't checked the non-hyphenated variables, because it seems our naming conventions put a hyphen in almost everything. I'll try and find one to test.
Do you want me wait to enter a support incident, until either you can test or I can upgrade?