". Again today I had to inspect another ad that was causing the same problem. It had an index of 1 million. How annoying. "
This suggests that your ad provider is noting that 'something' covers it up sometimes and so is auto adjusting its Z value. Consider talking to them about that.
This suggests that your ad provider is noting that 'something' covers it up sometimes and so is auto adjusting its Z value. Consider talking to them about that.