Can it leave other bits behind after it moves?
By definition of a pure spaceship / glider, no it can't. If it emits persistent "exhaust" that's a "smoking ship"[0].
[0] https://conwaylife.com/wiki/Types_of_spaceships#Smoking_ship
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By definition of a pure spaceship / glider, no it can't. If it emits persistent "exhaust" that's a "smoking ship"[0].
[0] https://conwaylife.com/wiki/Types_of_spaceships#Smoking_ship