When browsing a website in Chrome with Adobe Experience Cloud Debugger installed,
blanks may be displayed at the top of the page.
Attach a screenshot.
Not all pages, but some pages. Is there anyone who knows the cause?
You have "Iogous" display advertising pixel installed via google tag manager which is causing whitespace issue on top of the page.
Deactivate "Iogous" pixel in Google Tag Manager, you can remove the "Iogous" pixel rule trigger to do that.
Reimplement "Iogous" pixel probably without document.write logic.
Suggestion: Having two tag managers (Launch and GA) to implement two analytics solutions is not a great idea. Instead, I would use Launch to implement both (AA & GA)
Pretty unsure that it is because of Adobe Experience Cloud Debugger. Will try to get possible answer and get back!
Meanwhile will wait for others to revert.