Season beef on all sides with onion powder, garlic powder, black pepper, and 1/2 teaspoon salt. Add oil to a programmable pressure multicooker (such as Instant Pot). Select SAUTE on cooker. Select HIGH temperature setting, and allow to preheat. Add beef; cook, turning occasionally, until golden brown on all sides, about 15 minutes. Transfer beef to a heatproof bowl. Add poblano chiles and onion to cooker; cook, stirring often, until vegetables slightly soften, 3 to 4 minutes. Add 1/2 cup of the vinegar, stirring to scrape up any browned bits from bottom of cooker.