Hazel not reading pdf contents

I have several rules designed to move pdf files into other folders when they appear in the "Downloads" folder. The rules utilize the "content" "contains" feature. In the past, they worked quite well. However, starting 3-4 months ago (I don't know what version of Hazel worked last), the rules no longer work. They seem to be unable to parse the pdf file to find a specific string of text.
Anyone with any advice or have observed the same issue?
Anyone with any advice or have observed the same issue?