KazD Hi there, looks like this has been caused by a Leap setting. The most common cause of this issue is script delay.
I recommend heading to Leap and either using the Leap setup wizard in "optimize", or testing different Leap configurations by clicking "optimize" "change settings" and testing the site with all settings turned off (click preview to see the site), and then turning each setting on one by one.
If you find it is the script delay function, you can then either turn this off, or if you're feeling technically confident, you can turn script delay back on (or click "cancel" to revert to the saved settings). Then head to the preview again and click "script delay debugger" to find the exact scripts to be excluded from Leap.
Here's a guide on how to use the script delay debugger tool https://support.ezoic.com/kb/article/using-the-script-delay-debugger-tool