Is this a known issue? See attached gif (videos cannot be uploaded here).

This occurs when you edit the content within a text box in course management in the details text editor box. If you add an emoji, even just one, all of the text within the box will erase, even after the confirmation window appears that it saved successfully.
I did open a ticket but out of curiosity, I am wondering if anyone else has experienced this?
It took me a little while to pinpoint exactly what was erasing the content as there are not any character limits or warnings but after a little testing, I realized it happened after adding even just one emoji.