Since the papers that are usually used today are developing-out papers, no problem will occur if the stop bath was adequate to totally stop the development. The undeveloped halides are soluble in fixer whether they are exposed or unexposed as long as they have not reacted with the developing agents. If you are confident that the stop bath has been totally effective, you can turn the room lights on with the print still in the stop bath. However, to be safe, it is probably (but not necessarily) better to wait until the print is in the fixer.(posted 8074 days ago)