Not what OP said over on the (now deleted) Reddit post:

So the ad was supposed to play in that black box and this is a bug?

I had Bob's Burgers on in the background but was playing a game with my kid. The silence caught my attention, but not at first. At first I assumed it was a, "choose your commercial" thing.

After some more time I thought maybe it was asking if I was still watching, that's when I looked up to see this

I waited, nothing. I made a verbal comment and the whole family started looking. We waited, nothing.

I grabbed my phone, snapped the pic, made the post (but didn't actually post it), and it was still sitting there.

I guessed an answer, got it right, and the show came back

Then I hit "post" to actually make the post.

Some people say it went away on its own. Others say, like me, they had to answer, and others said even after answering it didn't go away

I've had Bob's Burgers on all morning and I've yet to see this again