Font and size changes when add link to text

When I highlight text and select Go To External Link the font and size of font reverts back to some default font rather than maintaining the font I was using. Is there a way to avoid this? If not, is that something that can be addressed in an update? Thanks.

You can avoid it by using text styles. The link text is not reverting to a random style, it’s the style for the link. You need to use the “Apply” button in the text style to make all link text for the selected style become what you want.