Thanks for the feedback. This is a very large pocket of air -- it's not a little "bubble". It does not flick to the top. It's also perhaps 2 to 3 X bigger than what it appears in the the pictures...
Hello all, This is a refill prescription so I was surprised when they didn't look the same as the first batch. The first batch was evenly filled to the plunger and only had a few tiny bubbles...