Hi Yigit, thanks for the response.

The troublesome Plugin turned out to be “WP-SpamShield”.

The code you provided fixes the parts of the pages that use columns in a colour section (with the plugin still running), but not the parts that use a Grid Row. Are you able to provide me with a code that would fix the Grid Row’s as well? Ideally I want to be able to continue running that plugin.

Regards
Tom