Help Understanding Search (Ctrl+F) In Preview With Scripts

I’m trying to understand why I cannot search for a word in preview mode when the page is the output of a script like ```tasks…

I can select, copy and paste text from the script outputs but I can’t search them unless I change to reading mode. This seems an odd requirement to me.

I know there has to be a reason for reading mode though I never use it unless I have to search a long document with script output.

I just want to understand.