Re-deploying turret after moving a fair distance causes turret to not function in both heal mode and damage (i.e. it does not fire anything, while buffed or unbuffed). Latest replication of this was when moving between mob zones in Necropolar (they are sufficiently far to cause effect, but close enough to be within turret respawn timer).
I have managed to get the turret to remain working across this same distance only by re-deploying continuously along the path (i.e. before the “distance” becomes an issue between two re-deployments). Successive re-deployments don’t clear the issue; I’ve had to wait for respawn timer every time.