Search box with DuckDuckGo (and other search engines) is broken on security level High and Medium-High

It seems since the NoScript update to 2.9.5 searching with DuckDuckGo and other engines (like StartPage) is broken if the security slider is set to "Medium-High" or "High". NoScripts XSS filter starts interfering:

[NoScript XSS] Sanitized suspicious upload to [https://duckduckgo.com/html] from [[System Principal]]: transformed into a download-only GET request.