Chrome devtools appends ".download" to my js files with I save the webpage with assets

I work as Product Manager for a SASS company. Our website is fully developed in-house. We use Chrome devtools as a pseudo-IDE to create prototypes for upper management, as part of creating a functional spec for a project.

Our workflow consists of saving a page with assets from our application, then modifying the HTML and CSS in devtools, and adding any JavaScript if needed.

When you save a page with Chrome, it downloads all of the assets locally. It has worked great in the past, but recently Chrome started appending a ".download" extension to JavaScript files only. This causes the JS files to be duplicated in the assets folder. It also changes the file path in the HTML head to point to the ".download" JS files instead. I can fix it manually, but once I save the page with assets again, Chrome does it again.

Is there anyway I can prevent Chrome from doing that?