Andrew Divoff, who plays the djinn in human form in this film and in the first Wishmaster film, does not blink when his eyes are visible. He does not blink even during scenes that his eyes are visible for 2-3+ minutes.
Actor Corey Haim made his uncredited appearance (as a burglar in the museum scene) as a joke for his girlfriend Holly Fields who plays Morgana.
The film was originally slated for a theatrical release but instead was released straight to TV and then video.
One location was the Lincoln Heights Jail building, which is used in a lot of other movies. The basement of this old jail was also used in A Hora do Pesadelo (1984).
Mistakenly thought as a plot hole When Eric "wished" he had never been born, taken too literally would result in the Djinn creating a paradox that would prevent Morgana from freeing him. The Djinn specifically states wishes directly affecting him are circumscribed by the prophecy now underway. This is similar to the more general restriction in the first movie, that which is immortal cannot die. As the Djinn must grant the wish but is free to creatively re-interprete it, the easiest method is to simply regress Eric's age to zero.