'Current' class tag keep turning up on no-current page links in Designer

This problem is repeatedly coming back in the Designer on multiple sites. Have had two tickets with support, temporarily solving the problem, but it still recurring again and again on multiple sites in Designer. It only happens in Designer, not on the live site, and refreshing the Designer UI solves it, but still annoying. Just me?

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I found this document in the Webflow University that might be useful to you.
Style the current state of link elements and tabs