What’s the meaning of dreaming of objects that disappear & later reappear? There is a logical explanation. The object falls into the category of something that can evaporate into invisibility, and then later condense back into its visible, physical form. The most common object is water. It boils and evaporates as steam. If a cold surface is held next to the steam, then it loses heat and condenses back into water. Dreams are invented and may not follow real life logic 100% of the time. A dream may take a thread of thought and make a spin on it. For example, your dream imagery may not be water but of chocolate. You might dream of chocolate that disappears and then reappears. How can this happen? This dream imagery may be using the theory of evaporation and condensation.
