CKeditor annoying tooltip on scroll

Hi c5,
This is a low priority request for some technical help.
Everytime I move the mouse over a new area of the input dialog of the CKeditor, there is an annoying tooltip / popup that displays :
"Rich Text Editor, cke280d0cc0219be853c5f4020abd52d1bc23". (see pic attached)
It disappears as soon as the cursor is moved.
Anyone know what purpose it serves? Anyone know how to disable it?
Thanks in advance,

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mnakalay replied on at Permalink Reply
isn't that just the browser's default tooltip?