Combine 1 tsp salt, 1/2 tsp pepper, and 1/4 cup flour and coat beef with mixture.
Saute beef in oil until browned (no need to cook all the way through) once browned set aside.
In pan that browned meat cook celery, onion, tomato paste, garlic.
Turn off saute setting, add 3 1/2 cups beef broth or water and 2 tsp Worcestershire sauce
Add browned meat back into instant pot, along with carrots and potatoes and bay leaves. combine well
Close lid, close vent, set to pressure cook on high for 35 minutes then let naturally release for 10 minutes then quick release
Remove lid and set to saute
Make corn starch slurry out of 1.5 Tbsp corn starch and 1.5 Tbsp cold water combine well then add into simmering beef stew
Stir well to thicken, turn off heat and serve