So just as when you look at a very small section of a circle it appears more-or-less to be a straight line, so when the Moon moves through a tiny portion of its orbit it doesn't appear to rotate.
https://en.wikipedia.org/wiki/Lunar_distance_(astronomy)#/me...
The Earth's rotation in the original gif makes it more difficult to see the cloud movement, but it's certainly present.
The moon is tidally locked to the earth and thus only rotates at about one revolution per month (about 27.3 days relative to the stars and about 29.5 days relative to the sun and to the DSCOVR satellite at the Earth-Sun L1 point which took these pictures);
Again, rotation that slow isn't going to be obvious in a time lapse covering only three and a half hours (if I'm doing the math correctly I'd expect under 2 degrees of rotation during the period covered by this timelapse)