Hi,
Just an update on this.
We have adjusted the behaviour such that the search view will be dismissed when navigating away from the viewer if you’re using a PTDocumentController (or a PTDocumentViewController).
This is available in our experimental nightly build available here:
DMG:
PDFNet_iOS_nightly_developer_2021-03-29_experimental.dmg
This will also be in our next official release which is currently scheduled for the first half April.