Shipping policy keeps changing

[capcityfi]

I listed items yesterday, most of which I used my USPS Ground Advantage shipping policy. One item sold and I was surprised it said the buyer chose Media Mail. I went and looked at all the other listings from yesterday and they all have my media mail policy. I've tried to change them all twice now and every time I click "revise listing," the shipping policy is my Media Mail policy. Why is this happening? I've tried on my phone and my laptop.

[stainlessenginecovers]

The 'napkin holder' shows 'Media Mail as a choice'. You can stop using 'business policies' and then edit making sure all items are the right size/weight and only GA is chosen. 

[va-8501]

I've had the same problem.  I exclusively use USPS Priority Mail.  Every once in awhile I find that a sold item defaults to Ground Advantage.  Not a big deal except for the fact that I use USPS Priority Mail boxes.   When it happens I either have to take a hit for upgrading to Priority Mail or find a plain box.