1471232 - iframe content overflow spontaneously after a couple of seconds

Status: REOPENED

(Core :: Web Painting, defect, P2)

Description

[jonkjolk]

Attachment: Picture of the bug

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180605171542

Steps to reproduce:

1) Create a new file called "frame.hmtl", insert a the normal head things (lang, title...)
2) Create a new file called "site.html", insert a the normal head things, add a test text then a iframe element to create a iframe from "frame.html" and after the iframe I add some text.




Actual results:

After a few seconds the content of the iframe goes over the normal content (see picture bug.png)


Expected results:

nothing

Comment 1

[jonkjolk]

Attachment: Code of frame.html

Comment 2

[jonkjolk]

Attachment: Code of site.html

Comment 3

[Bogdan Surd, QA [:bsurd, NI]]

I managed to reproduce this issue as well. Could not reproduce on chrome.

Comment 4

[jonkjolk]

What more information do you need?

Comment 5

[Karl Dubost💡 :karlcow]

Bogdan, did you have a question for me on this or a request for action? :)
Thanks.

I saved the files locally and and it doesn't happy to me on desktop Firefox Nightly 63.


jonkjolk, which version of Firefox on Android did you use?

Comment 6

[Bogdan Surd, QA [:bsurd, NI]]

Device:
 - Nokia 6 (Android 7.1.1);

@Karl It was a request for action since it seems to be a web compatibility issue, I've managed to reproduce this on all versions of FF for Android(Nightly, Beta, and Release).

Please let me know if there is any more information that I could provide.

Note:
This issue is not reproducible on Desktop versions of FF.

Comment 7

[jonkjolk]

@Karl I use the latest version available in the Google Playstore(61.0)

Comment 8

[Karl Dubost💡 :karlcow]

ok let's see I will put it online to be able to test a bit more.

These are the files on Android. http://www.la-grange.net/tmp/test/site.html

ok I was able to reproduce and its weird because it takes time before it happens.

For me nothing is happening, if I do not interact with the content.


1. Let the page 
2. Scroll the iframe content up and down again
3. wait. No interaction.

After ~15s the iframe content is overflowing its iframe. This is a serious rendering issue. :)

I took a profile which exhibit the scroll at the beginning and the spontaneous overflowing.
https://perfht.ml/2tSGyei

Comment 9

[Matt Woodrow (:mattwoodrow)]

Sounds like an APZ bug. Is this a regression?

Botond, have you seen anything like this? Might be container-ful scrolling related.

Comment 10

[Kartikaya Gupta (email:[e-mail])]

This is the same as bug 1339925 - according to my bisection at https://bugzilla.mozilla.org/show_bug.cgi?id=1339925#c2 it's likely a regression from Markus' clipping patches.

Comment 11

[Botond Ballo [:botond]]

Marking bug 1339925 as a dependency for now, so we don't forget to re-test this page after that bug is fixed.

Comment 12

[Botond Ballo [:botond]]

Like bug 1339925, this is also fixed by the patch in bug 1486695.

Comment 13

[Botond Ballo [:botond]]

Update: the patch in bug 1486695 was modified, and it no longer fixes bug 1339925.

Comment 14

[Firefox Bug Husbandry Bot]

Migrating Webcompat whiteboard priorities to project flags. See bug 1547409.

Comment 15

[Firefox Bug Husbandry Bot]

See bug 1547409. Migrating whiteboard priority tags to program flags.