We're seeing several ads being rejected over the last week or so because of AdWords incorrectly thinking their display URL isn't as it should be.
In all cases, the display URL was correct. What happened is that the AdWords system wasn't following the destination URL to its final destination after all redirects were complete, and was stopping at one of the intermediate destinations for some reason.
This has always happened to a small extent, but it seems to have become much more common over the last few days. Previously resubmitting the ads once would generally fix this problem too, but now they're just coming back disapproved again.
Can anyone at AdWords look into this if they're reading this forum?