I've just encountered this same issue on my website. It seems that came after a chrome update.
What I did, that fixed the problem for my web app, was to update the allow attribute to allow="fullscreen", and in others where I needed other properties it was like allow="fullscreen; accelerometer; autoplay;"

Examples:

<iframe
  src="https://..."
  title="Title"
  className="w-full h-full border-0"
  allow="fullscreen"
/>

<iframe 
className="rounded-xl w-full h-full"
width="1200" height="600" src="https://..."
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; fullscreen"></iframe>