HTML comment tags creating spacing between text.

When I am adding HTML comments, it creates a gap/space between the text on the pages where there is a comment.
<!-- THIS IS A COMMENT -->

Two comments in the code creates about the same gap as a <br>.

Example Code:
This is sample code
Second line of sample code

Example Render:
This is sample code
Second line of sample code

Example Code:
This is sample code
<!-- THIS IS A COMMENT -->
<!-- THIS IS A COMMENT -->
Second line of sample code

Example Render:
This is sample code

Second line of sample code