It did do it once again. I was not able to get a screenshot of this happening.
The characteristic of behavior was and is like the mobile toolbar is not there. Clicking on the tool in the toolbar takes you to the place in the note that is behind the tool you click, rather than implementing the function of the said tool.
The toolbar in this instance did not look any different, as it did in the past. It looked perfectly normal. Another words, a screenshot would not have shown any difference.
The reason I missed the screenshot, I was going to do a screen recording instead. I swiped down to activate the screen recording and upon return, the toolbar worked perfectly as expected.
I am not trying to bombard you with this issue, just trying to present the facts when happening to give a better understanding.