External Anchor Link from Text Widget

Hi, I’m having an issue when trying to link to an anchor from a text widget. The code I’m using is

<a href="https://www.mysite.com/page/#anchor1"></a>

When on the same page as the anchor the script works perfectly but when navigating from outside that page wordPress text widget adds an underscore to my link.

E.G. <a href="https://www.mysite.com/page/#anchor_1"></a>