1663454 - Print layout are not same between Firefox80 and 81.0b7 with default settings

Status: RESOLVED INVALID

(Toolkit :: Printing, defect)

Description

[Alice0775 White]

Attachment: screenshot 80 vs 81.0b7

STR:
0. Start browser with new profile

1. Open https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions
2. Menu Print
3. Observe layout of page 2

Actual Results:
No column layout

Expected Results:
Column layout

The layout should be same with default settings

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=bbc6744b3ca2f9b902c30bbb8c99965563421c5b&tochange=18dbcec715c7f176ef13c30579efd5603148c4de

Comment 1

[Emilio Cobos Álvarez (:emilio)]

This is expected. The site changes the layout with media queries, and I made mediaqueries account for the margin, as width and height should reflect the space available to the author.

It just happens that the page was very close to hit the breakpoint they have specified without the margins :)

I think this is invalid, but please reopen if you strongly disagree.

Comment 2

[Alice0775 White]

Okay,
I hope to be able to set custom margins again so that I will get same results. see Bug 1663436.

Comment 3

[Emilio Cobos Álvarez (:emilio)]

(In reply to Alice0775 White from comment #2)

I hope to be able to set custom margins again so that I will get same results. see Bug 1663436.

Wrong bug #?

I get the same layout as before with "minimum margins". To get the same layout with the default margin the source of the page needs to be changed somehow, to reduce the media query they have to make the columns:

@media all and (min-width:47.9385em) {

Comment 4

[Alice0775 White]

What is "minimum margins" meaning in the new print preview? Is it the mechanical limit of the printer?

Comment 5

[Emilio Cobos Álvarez (:emilio)]

Yes I think so.