@DavidHammen's answer to If a solar flare happened during a total lunar eclipse, would the Earth block the flare from hitting the moon? And for how long? describes the regular lashing of the Moon by the Earth's magnetotail. Go read it first then come back; I'll wait.
Anyone can tell when the moon is inside the magnetotail. Just look: “If the moon is full, it is inside the magnetotail,” says Stubbs. “The moon enters the magnetotail three days before it is full and takes about six days to cross and exit on the other side.”
It is during those six days that strange things can happen.
The most dramatic effects are intermittent and sporadic:
[...] Much of this is pure speculation, Stubbs cautions. No one can say for sure what happens on the moon when the magnetotail hits, because no one has been there at the crucial time. “Apollo astronauts never landed on a full moon and they never experienced the magnetotail.”
Well Chang'e-3 landed on the Moon and brought a Yutu rover along.
Question: Were they functioning during a full moon? If so, did they report getting hit by or noticing any effects related to Earth's magnetotail?