1363575 - Print problem, The footer(css float) overlaps the body

Status: NEW

(Core :: Layout: Floats, defect, P2)

Description

[Alice0775 White]

Attachment: testcase

+++ This bug was initially created as a clone of Bug #1361787 +++

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:53.0) Gecko/20100101 Firefox/53.0
Build ID: 20170413192749

Print problem, The footer(css float) overlaps the body.
Edge and Chrome are no problem.

Reproducible: always


Steps to reproduce:
1. Open http://essentialseeing.com/phototrip/exclusive-namibia-namibrand-photo-workshop/  (this page hangs when print, see Bug 1361787)
2. print or print preview

Alternate Steps to reproduce:
1. Open attached testcase
2. print or print preview

Actual results:
Footer parts  overlaps the main body

Expected results;
Should not overlap

Comment 1

[Alice0775 White]

Attachment: screenshot

Comment 2

[Astley Chen (inactive)]

TY, it seems a reflow issue in printing layout. Could you take a look?

Comment 3

[Ting-Yu Lin [:TYLin] (PDT, UTC-7)]

Attachment: float-print.html

I reduce the test case further. The frame tree dump is here. 
https://pastebin.mozilla.org/9070302

There's something fishy in the frame tree. We put the <div class="footer">'s placeholder frame (7f6124158f58) in the first page, but its out-of-the-flow float frame (7f6124158ea8) is on the second page.  

Also, the Block(body)(2)@7f6124159338 on the second page has 0 height. Perhaps that's why the float frame (7f6124158ea8) is at y=0.

I have no idea how to fix this the moment.

Comment 4

[Ting-Yu Lin [:TYLin] (PDT, UTC-7)]

Re comment 3:

> Also, the Block(body)(2)@7f6124159338 on the second page has 0 height. Perhaps that's why the float frame (7f6124158ea8) is at y=0.

This statement makes no sense. Please ignore it.

Comment 5

[Jonathan Watt [:jwatt]]

Mass bug change to replace various 'parity' whiteboard flags with the new canonical keywords. (See bug 1443764 comment 13.)

Comment 6

[Raluca Popovici, Desktop QA]

This issue is reproducible on my machine win 7x64 using Firefox 103.0b8. Please see screenshot.

Comment 7

[Raluca Popovici, Desktop QA]

Attachment: Capture (1).PNG