We are exploring the 4.25 update for the new .addHandles feature but are running into an unwanted change with the popups.
A header and footer are being inserted above and below the content and are buried deep in #shadow-root. The color of the content div has also changed to a lighter gray. I have tried using the visibleElements settings to no avail. I am hoping that there is a setting or property that I can edit to prevent these divs.
The only change to the codebase is the new API version. The header and footer can be seen in 4.25Popup image vs. 4.24Popup image. The location of the offending divs can be seen in the headerInShadowroot image and the visibleElements values in the visibleElements image.