Dende Master Class Quest Boss going off map/Killed by namekian that was trying to keep alive

When I got teleport to the arena for the trial I had to keep a namekian alive, during the battle the boss that was fighting the namekian kept moving back a bit every so often, eventually getting to some weird places or even off the map? Also as soon as the boss was killed, the namekian then went straight after me I couldn't attack it because your not suppose to and died because of this I still completed the trial by pressing retry so not really having any problems just reporting two bugs