1660474 - Table border in Print Preview cut-off when window is narrower

Status: NEW

(Core :: Print Preview, defect, P3)

Description

[John]

Attachment: Cropped Screenshot of Issue.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:81.0) Gecko/20100101 Firefox/81.0

Steps to reproduce:

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:81.0) Gecko/20100101 Firefox/81.0

Steps to reproduce:

Visit https://wiki.mozilla.org/Firefox/Roadmap/Updates with the new print modal dialog in Nightly. Open the dialog and view the print preview.

I am running the latest Firefox Nightly on Gentoo Hardened, with a Systemd/Gnome stack on Wayland. I am running Webrender and Fission. I am running Mozilla-provided binaries.

Actual results:

Notice per the attached screenshot the missing right-hand border in the table in the print preview.

Expected results:

The table should have all the borders displayed and not be cut-off.

Comment 1

[John]

Attachment: about:support

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 3

[Darkspirit]

mozregression --launch 2020-08-20 --pref gfx.webrender.force-disabled:true -a https://wiki.mozilla.org/Firefox/Roadmap/Updates
Confirmed. It also occurs with X11 and software rendering, so it's likely cross-platform.
Only some horizontal lines are missing for me, but different ones than on your screenshot.
I don't have a printer, but I assume the output would still be correct.
Edit: The PDF output looks correct.

Comment 5

[Jared Wein [:jaws] (please needinfo? me)]

Hi Emma, can you please set a priority and severity on this bug?

Comment 6

[Emma Malysz]

Hey Jonathan, have you come across this issue before?

Comment 7

[Jonathan Watt [:jwatt]]

Thanks for reporting this. Does this also happen for you with the preference print.tab_modal.enabled set to false?

(In reply to Emma Malysz from comment #6)

Hey Jonathan, have you come across this issue before?

There are several bugs on file related to printing tables. The closest in terms of behaviour that I can see is bug 1184707. This bug seems fairly unique though in that the borders are well within the margins of the page.

Comment 8

[John]

Hi Jonathan,

I have just tried this with print.tab_modal.enabled to false, and I cannot reproduce the issue.

Please see the newly attached view of the table in the old print preview dialog; it works as expected.

Comment 9

[John]

Attachment: Screenshot of Old Print Preview Dialog.png

Comment 10

[Hiroyuki Ikezoe (:hiro)]

Is this just depending on the preview window size? I mean, it depends on scale.

Hello John, would you changing the scale value to the minimum (30% I think) in the old print preview UI? On my Linux box, a vertical border line disappear in the 30% scale in the old print preview window.

Comment 11

[Sean Voisen (:svoisen)]

I suspect this is a graphics issue related to scaling as mentioned in comment 10. I can reproduce this on macOS depending on the scale in settings, with different borders disappearing at different scale values.

We have a few bugs on file for similar issues when the border is thin (1px): bug 1481307, bug 1476379, bug 1490361.

Comment 12

[John]

Hi Sean and Hiroyuki,

Apologies for the delay in response.

I have confirmed that this does not seem reproducible any longer by default on the new print preview window, on my 27" 1920x1200 monitor. Presumably, this is now not visible due to the recent change that allowed the print-preview window to be more adaptive. Nonetheless, I am reasonably certain it would be visible on certain resolutions and configs.

I also suspect that this is due to scaling, given that it changes depending on the zoom setting.

Although it is not present by default anymore on my setup, I can easily reproduce it by trying to further zoom in the preview (from its default state) through the use of the scroll wheel.

Regarding your query for the old print preview dialog, I can confirm that indeed at 30% the border disappears completely, although if I again use the scroll wheel slightly, I can get some borders back.

Comment 13

[John]

I have also uploaded a couple more screenshots with the old print preview at 30%, before and after scrolling slightly.

Comment 14

[John]

Attachment: Cropped Screenshot - Old Preview - 30%.png

Comment 15

[John]

Attachment: Cropped Screenshot - Old Preview - 30% - After Scrollwheel.png

Comment 16

[John]

Attachment: Cropped Screenshot - New Preview - After Scrollwheel.png

While I was updating the bug, I thought I'd provide a screenshot of what I was saying re reproducing the issue on the default new preview after zooming slightly with the scrollwheel.

Comment 17

[Sean Voisen (:svoisen)]

Thanks John!

Comment 19

[Jonathan Watt [:jwatt]]

I can still reproduce this bug. The simplest way to reproduce it is to open print preview, then resize the browser window to make it progressively narrower until the borders start to disappear.

Comment 20

[BugBot [:suhaib / :marco/ :calixte]]

The severity field for this bug is set to S4. However, the following bug duplicate has higher severity:

• Bug 1713288: S3

:jwatt, could you consider increasing the severity of this bug to S3?

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