Button is hidden and on careful click of it getting a JavaScript Error

Button is hidden and on careful click of it getting a JavaScript Error

In Zoho Mail Settings, when the save button is clicked, I am getting a JavaScript error. The button itself is hidden and only 25 per cent is visible. I need to click it only by two ways.
 
  1. Carefully position the mouse in its area and click it.
  2. Use Tab key from the previous textbox and once the focus goes and rest there, I have to press (hit) enter key.

See screenshot attached for your reference and troubleshooting.