Hi @andre ,
Which build of WebViewer are you using (can I get a link to it)? I tested the latest nightly and 8.7 build on npm and both seems to be working with the “EXTRACT_USING_ZORDER” option
npm install @pdftron/webviewer@8.7-nightly
^when using npm, make sure the public static folder WebViewer is pointing to is up to date
Searching with EXTRACT_USING_ZORDER enable wasn’t working in the official 8.7 release but has been fixed in the nightly builds. It should also be in the upcoming 8.8 release which should come out in the next few weeks. It could be possible that your browser is caching an older version of WebViewer without the fix