thegizmo Reporter
	Description • 9 years ago

Hello I do have a problem while printing HTML pages using firefox. Content that is contained within the HTML is not printed, instead the whole page is missing.

This error occurs if a certain element reaches the bottom of the page, so that a pagebreak occurs. The content that should follow is lost within the printing.

I attached two images. One to show how the printed page should look like, and one to illustrate how it actually is printed (which is wrong). Furthermore I attached a zip file containing the html file and the needed images and css files.

I was able to create a temporary fix for the bug, by modifying the used css. I reduced at least one css file (docsurf.css) to the absolute mimimal setup which recreates the bug. So it seems that changing the rule which adds a margin to the body to:

@media screen {
 body {
 margin: 1em; } }

fixes the bug in the given case.

It might be possible that the behaviour I descriped is intended by firefox. If so it is no bug, but could you give an explaination why that is so?

To reproduce the bug I adjusted the top and bottom margins within the page setup, so that the div with the content "Procedure" (see images attached) is at the bottom of the printed pages.

I checked the known bugs for duplicates so I hope it is new bug. Sorry if I am wrong.
Hopefully I attached all information you need, if not feel free to ask me for more facts. This is my first bug support so sorry for any mistakes I made.

Environment used: Firefox version 26 as well as 33 and 40.0.3.

To reproduce:

1) Open node.htm
2) Look at the print preview, and adjust the top and bottom margins so that the subheading "Procedure" is at the bottom of a printed page

ERROR case: See picture (content under "Procedure" is lost)
EXPECTED behaviour: See picture (content is printed correctly)


Feel free to contact me if I can help

Thanks and regards

	Loic
	Comment 2 • 9 years ago

WFM with ff40 on win 7.

Could you test with a fresh profile (without modifying anything)
https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

	thegizmo Reporter
	Comment 5 • 9 years ago

Hi tried using a new profile as you suggested. But the result stays the same, attached it as pdf. Have you adjusted the page margins (to locate the "Procedure" at the bottom) as I explained above?

	thegizmo Reporter
	Comment 6 • 9 years ago

Just noticed the following: In the sample that was provided by Loic, section 4 "Close Out" is missing. So for me it seems as if the bug is reproducible. But as I am the one who reported it, it is not my task to decide this matter.

	Loic
	Comment 7 • 9 years ago

Indeed, some parts are missing, so it's reproducible.

	thegizmo Reporter
	Comment 8 • 9 years ago

Mh ok that is somehow good to hear. So what is next? I would set the status to confirmed, but it seems as if I'm not allowed to do so. Can I still do something useful to help?

	Loic
	Comment 9 • 9 years ago

We need a reduced testcase to know where is exactly the issue (like which CSS property implies this bug).

	thegizmo Reporter
	Comment 10 • 9 years ago

I've reduced the sample as much as it was possible for me now. Attached a new version, just 2 (small) css files remain, all js scripts removed. Maybe someone has an idea :) Further reduction of css properties might be possible but I've no more time atm.

I have posted a small snippet of css in the bug report (body/margin) which might be of interest.

Feel free to contact me if I can be of further help, I'll respond asap.

	thegizmo Reporter
	Comment 11 • 9 years ago

Hi, 
i took a bit of time to reduce the sample a bit further. Error is still reproduable, but now by removing any of the remaining 12 css properties it disappears. 
In my humbly opinion the error is linked to whitespace on the bottom of the page, which causes the printing-malfunction. But maybe this is quite obvious.
I ran out of _real_ ideas and solutions maybe someone has any idea now.