This Leia talking to Luke shot does a strange bump/shift part way through the shot:

The odd 2004 recoloring of explosions has been removed in 2019:

The lightsaber clash explosion right before the infamous Emperor oddity from 2004, looks like maybe their judgement was to do this color change because the raw explosion was viewed as too much clear bright white at the time. As this has been undone in 2019, you can see how some detailing of these bright explosions has been lost:

Luke demasking Vader, those shots have been zoomed out.

End Celebration:
2:05:23 - Luke in front of Vader’s pyre is reframed.
2:05:26 - Fade to Cloud City from Endor has been modified/redone. Cloud City and other SE shots are zoomed in.

Wipe to Tatooine from Cloud City has been retimed/redone.
In the transition to Theed, the last thin brown post gets thicker as it moves center to right of visible frame.
Pan down to Ewok village follows same zoomed in reframing as the SE added shots.