Using the "Browning" function, preheat the pressure cooker and add the olive oil.
Sprinkle salt and pepper on the sides of the roast pieces and then toss pieces in 1/8 cup flour, coating all sides.
Brown the pieces of roast for about 2 minutes on each side, working in batches based on space in the pressure cooker. Set seared pieces aside.
Add the onion and cook until they begin to soften and brown, about 5 minutes.
Add the garlic, remaining spices, and 1/2 tablespoon flour. Stir frequently and cook until fragrant, about 1 to 2 minutes.
Add the remaining ingredients and stir until combined. Return roast pieces to the pot.
Lock on lid and set cooker to high pressure for 65 minutes.
Manually release pressure and remove roast pieces and bay leaves.
Set cooker to saute and stir occasionally to reduce the sauce. Shred the roast pieces and add back into the sauce. Reduce until thick and meaty, about 5-10 minutes. Enjoy!