I want to Opera browser stable version. But there's a problem. Opera can't play on facebook but play videos on other websites (Youtube and Udemy).
Opera can't play only when logged in my Facebook account. Opera, when I'm not logged in my Facebook account. plays all videos on Facebook. But Chrome/Chromium browser plays videos in my Facebook account and other websites.

I tried:
I reinstalled Opera browser. I downloaded from https://www.opera.com/tr/download
Flash Player is installed and enabled. I checked. https://helpx.adobe.com/tr/flashplayer.html
I enabled adblocker extension. I added Facebook website to the exception list.
I disabled and removed all (adblocker and google translate) extensions.
I downloaded Opera browser (opera-stable and opera-stable-ffmpeg package) in CentOS repository. Problem is don't solved.
I reset the Opera browser settings. Still, Opera can't play only when in facebook account. But Opera, when I'm not logged in my Facebook account.
I cleared all cookies, caches, data.
Launched Opera in private mode.
Enabled/Disabled hardware acceleration on Opera settings.
I copied /usr/lib/chromium-browser/libffmpeg.so file to Opera install directory.
I downloaded unofficial ffmpeg.so file and moved Opera install directory. https://github.com/iteufel/nwjs-ffmpeg-prebuilt/releases
I logged in other facebook account and I tried play videos.

Note: I restarted Opera browser when after every try.

Opera And System Information:

Version:58.0.3135.53
Opera is up to date
Update stream:Stable
System:CentOS Linux 7 (Core) (x86_64; MATE)

Browser identification
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36 OPR/58.0.3135.53

Paths
Install: /usr/lib64/opera
Profile: /home/onur/.config/opera
Cache: /home/onur/.cache/opera

Opera: GPU (opera://gpu) Information
https://pastebin.ubuntu.com/p/sdK2wBh5GG/

Can anyone help me?

@leocg
Not available on my platform.

@jimunderscorep
I read the post and all comments. If so there is nothing to do.

Why developers don't fix the problem?

@jimunderscorep
I'm using CentOS 7.6 to learn the CentOS server management. I'm used to the Arch Linux distribution. There was no problem in the distribution of Arch Linux

@jimunderscorep
I'm using CentOS 7.6 to learn the CentOS server management. I'm used to the Arch Linux distribution. There was no problem in the distribution of Arch Linux

@leocg
Not available on my platform.

@jimunderscorep
I read the post and all comments. If so there is nothing to do.

Why developers don't fix the problem?

I want to Opera browser stable version. But there's a problem. Opera can't play on facebook but play videos on other websites (Youtube and Udemy).
Opera can't play only when logged in my Facebook account. Opera, when I'm not logged in my Facebook account. plays all videos on Facebook. But Chrome/Chromium browser plays videos in my Facebook account and other websites.

I tried:
I reinstalled Opera browser. I downloaded from https://www.opera.com/tr/download
Flash Player is installed and enabled. I checked. https://helpx.adobe.com/tr/flashplayer.html
I enabled adblocker extension. I added Facebook website to the exception list.
I disabled and removed all (adblocker and google translate) extensions.
I downloaded Opera browser (opera-stable and opera-stable-ffmpeg package) in CentOS repository. Problem is don't solved.
I reset the Opera browser settings. Still, Opera can't play only when in facebook account. But Opera, when I'm not logged in my Facebook account.
I cleared all cookies, caches, data.
Launched Opera in private mode.
Enabled/Disabled hardware acceleration on Opera settings.
I copied /usr/lib/chromium-browser/libffmpeg.so file to Opera install directory.
I downloaded unofficial ffmpeg.so file and moved Opera install directory. https://github.com/iteufel/nwjs-ffmpeg-prebuilt/releases
I logged in other facebook account and I tried play videos.

Note: I restarted Opera browser when after every try.

Opera And System Information:

Version:58.0.3135.53
Opera is up to date
Update stream:Stable
System:CentOS Linux 7 (Core) (x86_64; MATE)

Browser identification
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36 OPR/58.0.3135.53

Paths
Install: /usr/lib64/opera
Profile: /home/onur/.config/opera
Cache: /home/onur/.cache/opera

Opera: GPU (opera://gpu) Information
https://pastebin.ubuntu.com/p/sdK2wBh5GG/

Can anyone help me?