Cursor oddities

What’s this little glyph at the top of the cursor?

I see it changes as I move it. I don’t recall having seen it before. Just curious!

Looks like the arrow that shows the direction of text you would be inputting if you’re in a right-to-left (Hebrew/Arabic) vs left-to-right scenario.

Odd… I wonder why I’ve never seen it before, and why it’s displaying now. Must be a character in the line that is read right-to-left.