The text for Mislead states (emphasis mine):
You become invisible at the same time that an illusory double of you appears where you are standing.
You can use your action to move your illusory double up to twice your speed and make it gesture, speak, and behave in whatever way you choose.
Other Illusion spells specify how real the illusion seems. For instance, Major Image states:
It seems completely real, including sounds, smells, and temperature appropriate to the thing depicted.
Physical interaction with the image reveals it to be an illusion, because things can pass through it.
What are the limitations of Mislead's illusory double?
Can it interact with the environment (e.g. open doors, pull levers)? Is it solid? Does it have weight (or can it be made to seem to have weight)? How can the illusion be revealed? Can the illusion be revealed?