When I transition from swimming up the ramp (water zone with the portal on the upper level) I remained in swim state for an extended period of time despite being on land. Targeting boxes and looting was problematic because character model was hovering above the ground. On the upside, my character managed to "fly" up a nearby cliff which would otherwise be inaccessible by foot.

The swim state went off after awhile; probably 1-2mins after the glitch was encountered.