I don’t understand what you are trying to convey in your first two lines.
No, I did not check on all browsers (I only use Safari and Firefox anyway). Jeffrey said he would be testing it, so I was supplying info for testing.
Thanks Jeffrey. If it helps any, I’ve noticed the “phantom” disappearing checkmarks are mostly happening on page 1 of 3 of the media. Also, a related weirdness (again, could be browser-specific?) when I click page 2 or 3 in Media, it reverts back to the “Sitewide Values” tab, then I must click Media once again and when I do, I’m at page 2 or 3. It’s not a big problem–just extra clicking. But it seems related…
Thanks again!