Will-change prevents fixed positioning

[5e-Cleric]

Issue description

First of all, this is not a bug, this is a known collision from two CSS properties, and it does not affect the tool in a negative way in its purpose of creating printable documents.

That said, i've been trying to create a sort of sidebar for documents to be seen and shared as links, because i think they can be of use.

But the property will-change: transform breaks position:fixed, and renders fixed sidebars impossible to make. I hereby ask for that property to be removed, and an alternative to be considered, if there is one.

Why is it there?

From the official documentation: "The will-change property provides a rendering hint to the user agent, stating what kinds of changes the author expects to perform on the element. This allows the user agent to perform ahead-of-time any optimizations necessary for rendering those changes smoothly, avoiding “jank” when the author does begin changing or animating that feature."

Other arguments to have in mind

• Good practice, from MDN: "adding will-change directly in a stylesheet implies that the targeted elements are always a few moments away from changing and the browser will keep the optimizations for much longer time than it would have otherwise. So it is a good practice to switch will-change on and off using script code before and after the change occurs."

• Last resort, from MDN: will-change is intended to be used as a last resort, in order to try to deal with existing performance problems. It should not be used to anticipate performance problems.

[5e-Cleric]

Commented by Calculuschild on gitter chat that the will-change:transform is absolutely necessary for the correct behaviour of the scrolling function on the brew preview. It stays, closing this issue.