facebook cannot be correctly seen on last update of PM28 (unstable)

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lashkevi
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facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-06-30, 08:49

With the last update of PM28 (unstable) the Facebook pages cannot be seen. When I scroll them down the contents completely disappears (flat blue field) and appears again, when I scroll back. There is no such problem with both the previous version of PM28 and the PM27.9.3.

System: Linux (openSUSE 42.3).
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therube
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by therube » 2018-06-30, 10:15

And just what update of PM28 are you speaking of?

URL to this FB page?

Works for me.
https://www.facebook.com/lauriesklarstaryoga/?ref=py_c

viewtopic.php?p=144544#p144544
Last edited by therube on 2018-06-30, 10:21, edited 2 times in total.
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lashkevi
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-06-30, 10:23

therube wrote:And just what update of PM28 are you speaking of?
The update, which is currently on the page: http://linux.palemoon.org/download/unstable/
(They are unnumbered, unfortunately.)
URL to this FB page?
Just https://www.facebook.com/ and every other page.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by therube » 2018-06-30, 10:55

What does about:support, build id: show, 20180625103157 ?
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lashkevi
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-06-30, 11:05

therube wrote:What does about:support, build id: show, 20180625103157 ?
No, build id 20180629003757
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Cassette » 2018-07-01, 00:29

I'm seeing it too even in safe mode.

build id 20180701052251
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Moonchild » 2018-07-01, 01:12

Guys, it's easier to just list what's in the about box (betas have a build date listed) instead of the BuildID blurb. Saying "latest" doesn't help us.
Last edited by Moonchild on 2018-07-01, 01:13, edited 2 times in total.
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lashkevi
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-07-01, 10:16

Moonchild wrote:Guys, it's easier to just list what's in the about box (betas have a build date listed) instead of the BuildID blurb. Saying "latest" doesn't help us.
Version: 28.0.0b1 (64-bit) (2018-06-29)
Is this ok?
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Moonchild » 2018-07-01, 10:23

Yup

OK, try this. Go to about:config
in the list of preferences, find general.useragent.override.facebook.com and general.useragent.override.fbcdn.com
Both of these values have a Firefox 99.9 UA -- try changing the version number to 52.9 (both rv: and Firefox/xx.x)
After that, clear your cache and restart the browser.

If that doesn't work, try setting both values to:

Code: Select all

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:4.1) Goanna/20170101 PaleMoon/28.0.0b2
Last edited by Moonchild on 2018-07-01, 10:25, edited 2 times in total.
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lashkevi
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-07-01, 10:41

Moonchild wrote:Both of these values have a Firefox 99.9 UA -- try changing the version number to 52.9 (both rv: and Firefox/xx.x)
After that, clear your cache and restart the browser.
No use.
Moonchild wrote:If that doesn't work, try setting both values to:

Code: Select all

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:4.1) Goanna/20170101 PaleMoon/28.0.0b2
No use.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Cassette » 2018-07-01, 15:56

I can confirm that neither UA setting stops the posts from vanishing.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by therube » 2018-07-01, 16:09

OS (since we're not allowed to know)?
And do you have a choice in video renderer?
Any change if you restart in Safe Mode?
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Moonchild » 2018-07-01, 16:24

ok.

It might be the intersection observer code in that case, which Facebook extensively uses (but probably only targets Chrome with)
Please go to about:config and set dom.IntersectionObserver.enabled to false. Let me know if that fixes the issue.
Last edited by Moonchild on 2018-07-01, 16:27, edited 1 time in total.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Cassette » 2018-07-01, 16:44

Looks like that fixes it on my end.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Moonchild » 2018-07-01, 17:57

Cassette wrote:Looks like that fixes it on my end.
Good, good.
Since it's one of those "usefulness is dubious" working drafts, it's no big deal if we disable it by default.
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"Seek wisdom, not knowledge. Knowledge is of the past; wisdom is of the future." -- Native American proverb
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lashkevi
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by lashkevi » 2018-07-01, 22:45

Moonchild wrote:Please go to about:config and set dom.IntersectionObserver.enabled to false. Let me know if that fixes the issue.
Indeed, it fixes.

By the way, I updated to 28.0.0.b2 (64-bit) (2018-06-30) and it shows the same behavior.
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by Moonchild » 2018-07-02, 09:14

lashkevi wrote:By the way, I updated to 28.0.0.b2 (64-bit) (2018-06-30) and it shows the same behavior.
OF COURSE it does. Did we conclude this investigation before it was released? No. Should we magically expect patches to travel back in time to apply themselves to already-released versions? 8-)
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"Seek wisdom, not knowledge. Knowledge is of the past; wisdom is of the future." -- Native American proverb
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Re: facebook cannot be correctly seen on last update of PM28 (unstable)

Unread post by back2themoon » 2018-07-11, 09:39

Getting this again today... 28.0.0b3 x64 (2018-07-08). dom.IntersectionObserver.enabled is set to false (now by default I think).

update: it works again now...
Last edited by back2themoon on 2018-07-11, 20:53, edited 2 times in total.
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