Auras Rollover from Previous Combat

Not sure if this minor bug is intentional.
When I play an aura gem in combat, then engage in another round of combat, the aura is still in play for the first second of combat. I just used a Aura of Reflection Rank 1 on a White Hawk in the Fern Grove, and did find that it took damage in the first second of combat due to the aura's effect, even though the aura wasn't technically "in play."
Again, a minor bug, but still slightly exploitable. There have been a couple of fights I've done that have come down to a few hp.

This is intentional.

Thanks. Just discovered it doesn't work after gathering resources.

It only works if the next combat is started soon enough after the first combat ends. The auras then disappear very quickly. It is not exploitable due to the low effect the auras would have for the one hit they get.