Media query applied to design view upon open, even though frame is wider

Hi there,

For some reason, when my team and I open our HTML email files in Dreamweaver, the design view loads as if the media query has been applied, even though the window it's loading into is much wider than the media query would apply to.

The media query is:
@media only screen and (max-width: 559px) {

The design view window is much wider than 559px, but when it loads it loads the deisgn view as if the media query is applied.

Adjusting the size of the window (the bar between code view and design view) even slightly, reloads the design view properly and fixes it.

Seems like a bug!