Other mistake: During the Battle of Teth (the pillared jungle planet), the AT-TE's shoot the ledge at the top and there's not a single mark on the ledge afterwards, despite being hit with several joules worth of fire.
Other mistake: During the Battle of Teth, a walker fires at one of the pillars. In the next shot, it hits the very top ledge. Problem is it was actually aiming at the middle, as was the other walker.
Answer: Both Jedi Knights and Jedi Masters can have Padawans apprenticed to them; the rank of Master is generally awarded once their first Padawan has successfully passed the trials and become a Knight themselves. While Ahsoka calls Anakin Master in formal circumstances, that's merely an indication of her status as his apprentice; Ahsoka being only his first Padawan, Anakin is still only a Jedi Knight.
Tailkinker ★