Hover pop up tool at the bottom of the document is invasive and annoying
The popup that comes up for the user is in a most annoying position. The main reason is that it covers text that the user is in the process of reading.
There is often better grey space to put this in. It might even be better to have this at the top if you must insist on it being present. This is because people read top to bottom and often hover over the text to read and it is less likely to occur at the top of a page because the user is not likely keeping their place.
And why not put it in the title bar? Or have a dynamic option to include it in a MS Word "Ribbon" like feature? Finally, those are common tools, so why do you make the user wait for the pop up to access the tools?
This pop up needs to be relocated and redesigned.