I found a temporary solution.. It's far from convenient but since I usually write in English and just wanted to transfer my original notes in Hebrew from an excel database, it's good enough
If I try to copy a text from excel to EN - no way to change direction.. but! if I first copy the text to a basic windows sticky note, then use the right ctrl-shift to change direction, and only THEN copy it from the sticky note to EN - it works!
If I want to write a new note in Hebrew I usually just copy an existing note with a proper RTL and erase all but a few words, carefully delete them, and start writing the note, and if I want to copy text in Hebrew to an existing LTR note, I'll do the sticky-note-method..
**BTW, it works both ways - meaning, once you have a note with a RTL format, you can't ctrl-shift it back to LTR, but if you copy the LTR text you want from a sticky note, you can create a note with part RTL and part LTR.
Hope this helps!