Just to update here, we pinpointed what was causing this issue and are working on a fix that we'll plan to include in the next incremental patch. Again, this is a UI/display issue and you are not actually losing your buffs.
Hi All, just confirming the timer change was intended, as highlighted in our patch notes. The change is meant to get all timers consistent, with a one-time adjustment to any campaigns which would have reset sometime in June. They will instead reset on the first of July. Again, this reset is meant to get all timers on the same reset schedule. Rewards will be issued out during the next reset as normal.
However, we are passing this feedback on to the dev team so they can evaluate and factor in for any future changes.