Print support not working in Firefox

[Choonster]

The printing support added in 7.0.0-beta.23 (#954) doesn't seem to work in Firefox, Edge or IE; probably due to them not triggering print media queries in JavaScript (see this Firefox bug).

The watermark on the flex layout demo site is an example of this.

When printing from Chrome 73.0.3683.103, the watermark is clearly visible:

When printing from Firefox Nightly 68.0a1, Edge 42.17134.1.0 or IE 11, there's no watermark:

[mohamedalijinnah]

fxShow.print is working fine only in chrome. MS Edge and firefox are not supported.

I'm using version 8.0.0-beta.27

Please advise.

[CaerusKaru]

Can confirm this doesn't work in Firefox, but does work in Safari and Chrome (and by extension Edge, since they are now Chromium based). I'll try to do some more investigation on why Firefox is not working correctly.