The CTRL+F command in Acrobat Reader DC in 21.001.20135 version does not find the searched term
When type a search term into the search window and get the message: “Adobe Acrobat Reader has finished searching the document. No matches were found”. This is even though the search word is included in the document.
See here example for the term "High"

This happens on many documents that I use regularly and for which the function has always worked. Search stopped working last week, but after a long search, I also found documents in which the search works.
I have alredy try to:
- change all the search options like: Whole Words Only, Case sensitive etc…
- repair the installation : "Help / Repair Installation".
but none of that helped.
Can you advise what else should I try? However, it will probably be a mistake in the last update, because everything worked until last week.
I run Acrobat on 64-bit Windows 10 Enterprise 1809
Thanks
Jiri
