Corrupted display due to announcement banner in Confluence

[Rumceisz]

Hi Everyone,

we put an announcement banner to our Confluence 5.6.6 and in edit mode the page is broken. Do you have a hint why is that?

Thanks,
Rumi

[Nic Brough -Adaptavist- · Accepted solution]

You've put something bad in the banner.  The usual culprit is incorrect html with an unclosed <div> tag, but I've seen people mess it up with javascript as well.

Clear it out and revert back to nothing, then put in a clean one without errors.