Reviewing Blank Ads

Ad Review Center

[keyplyr]

When looking at unreviewed ads in the ad review center, every so often an ad fails to load. Do you always block it or judging by the URL guesstimate it safe (or not) and mark it reviewed?

Does reloading the page ever display the ad that was previously blank?

[Travis]

I also see ... or more precisely not see ads in the Ad Review Center. I had never been able to tell if this is a bug / problem with the Adsense site, or if these ads are also buggy and appearing as blank at my sites. So far I ignore them (not block). But it's good question. Using the Chrome dev console, I see plenty of error / warning messages, but I can't tell if this is related.