TC200J TC20 Scan Button do Page back in Browsers like Firefox or Chrome

Hello Everyone!

I have a Problem with the TC200J
Everytime we press the left Scan Key (or the middle one) the scanner sends also a "BACK" command. So you cannot use the Scanner on Web based Application.
The scanner do every time a browser back function and did not stay on the side. (The right Button do a Browser forward)

This behaviour is in chrome and in firefox.

What can I do to deactivate this function?

The older Models of TC20 dont do this an work as expected.

The newer one (MD: Feb 2020) have a new Wedge Menue and have the described behavior.

But i dont know how to deactivate this function.

I hope somebody can help me out.