Issue with Page Section Colors Not Syncing to Webflow

Hi, am new here and new to Slack so apologies if asked and answered already - experiencing an issue with the "Design" aspect - on all of my site pages bar one of them (strangely) the page section colours aren't syncing when i export to Webflow. It seems to take on the colour of the nav bar as the background for the whole page (see images). Is this a known issue? Any ideas if a Relume or Webflow problem?