Plasma 5.25 Videos Broken in Firefox

[John Vilsack]

Ben,

Thanks for reaching out. I wasn't sure if this was the right channel or not.

I'm able to reproduce it two ways on Firefox 102 and 103:

1. Using uBlock Origin
2. When my local pihole is active

This is starting to become a heisenbug for me. I'll run you through my
diagnostics here:
1. The issue appears to be a page request hang when matomo.php and/or
matomo.js are not received. Interestingly, reloading the page fixes this,
another reload will break it, and the cycle continues.
2. I started to think this was as simple as unblocking the script calls for
matomo.
3. I kept messing with it and now after about five seconds, it appears that
the videos will start on a delay. This wasn't happening earlier and
it's not due to any changes I made locally.
4. Further messing about and now the videos load quickly on both 102 AND
103 on multiple machines.

I would normally not add all this detail, because when this has happened in
the past it usually means someone, somewhere, fixed something. Since you
couldn't replicate it, I'm going to chalk it up to a weird CDN caching
issue that spamming multiple requests for the videos changed something.
These are the WORST sort of problems to resolve.

I apologize if this has taken up any of your time needlessly. I figured
that given the likelihood that KDE users are more inclined to run Firefox
and some sort of adblock, you'd want to keep this on your radar. It being a
UFO isn't helping matters much.

Thanks,
JV




On Thu, Jun 30, 2022 at 3:13 AM Ben Cooksley <bcooksley at kde.org> wrote:

> Hi John,
>
> Thanks for reaching out to us and letting us know of the issues you've
> been experiencing.
>
> I've just been testing this locally and i'm afraid I haven't been able to
> reproduce the issue you've been describing.
> Are you using any extensions or addons within Firefox that may be
> impacting on the ability of the page to load?
>
> Please also try using a different version of Firefox, just to cover the
> use case that there is a bug in the webm handling in the Firefox version
> you are using.
>
> Many thanks,
> Ben Cooksley
> KDE Sysadmin
>
> On Thu, Jun 30, 2022 at 7:02 AM John Vilsack <vilsack at gmail.com> wrote:
>
>> https://kde.org/announcements/plasma/5/5.25.0/
>>
>> Tested Firefox 102 on fresh Arch install as well as a Windows 10 machine.
>> None of the videos work in Firefox. Loads in Chrome ok.
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-www/attachments/20220630/3855ef8d/attachment.htm>