Cart dates totally broken on any page besides catalog

Both on master (3.2.0) and development (~3.3.0) changing the dates on the cart never succeeds. The spinner spins (forever, I suppose) and the cart dates are never actually updated.

GG

Edit: in some cases a 500 internal server runtime error is triggered via the javascript console, which of course has to do with dates and times

`ArgumentError (comparison of Date with ActiveSupport::TimeWithZone failed):`

Edit 2: on master it appears that changing the cart date never succeeds!! Can someone try to replicate this, it is very odd behavior

Edit 3: i suspect this is a db issue