The DS explosion is clearly in the upper half, so the dish could have been blown off by the concussion wave and the flash makes it impossible to see.
The specks were a lot bigger in ROTJ, probably big enough to leave a large crater or ruin your day if it lands nearby, and it was a lot closer to Endor than DS1 was to Yavin 4…
They cut away after this frame, so there’s wiggle room for falling debris.
The wreckage could also have gone into a wide orbit of the Endor system and fallen on another nearby planet months or years later.