Every dictionary I checked lists the a in stative as long a, as in ate; none listed short a as in apple. In spite of that, I have heard native speakers say it both ways. That doesn't make short a right; I'm just letting you know that you may hear native speakers say it that way on occasion.
P.S. There's no a sound in bed. I assume you mean the a in bad.
P.P.S. It's incorrect to say "How to pronounce blah-blah-blah?" That's not a complete sentence; it's a noun phrase. You should say "How do you pronounce blah-blah-blah?"
Student or Learner