Help centre

The snippet the Setup tab handed out before this work: async rather than defer. Pasted copies of it are already live on customer sites.

Scenario: The legacy async snippet
Watch for: It still works. With async the loader can outrun the parser, so a container further down the page may not exist yet — which is why the panel now hands out defer.

The container above sits after the async snippet on purpose. If the frame landed next to the script instead of in here, that is the race, reproduced.