Since nobody has replied to my post here, I went ahead and asked Aria. The response was that the H.264/MP4 codec is not supported by Opera for Linux out of the box. Supposedly, the snap version of Opera has better support for this popular video codec, but Opera does not offer that option for download on its website.

I cannot understand the reasoning behind why Opera is the only browser (AFAIK) that has this serious limitation. Opera is so good in so many other ways, so how could they have overlooked this? I've used Chrome, Chromium, Firefox, and Edge on my Linux system in the past and have never had any issues with YouTube.. But for some inexplicable reason, Opera cannot do it. I wish the Opera team would fix this issue, as being unable to watch some videos on YouTube is a major flaw in any web browser.

When trying to open a live YouTube video, I get the error message in the video box "Your browser can't play this video. Learn more." When I click the "learn more" link, it says my browser is up to date. I can play other YouTube videos, but I cannot play this live video. How can I fix this? I just installed Opera only 3 weeks ago. Some things I love, but it should not have this many bugs.

When Opera crashes, I then relaunch the browser and it opens with a message saying "opera recovered from a crash". But that's it. There is no button that I can click to restore my last session. The tabs and pages I had opened at the time of the crash are not automatically restored, and they do not appear in my history either. It's bad enough that Opera crashes fairly often, but it's worse that it does not provide for a way to restore my tabs which were lost in the crash! I'm not a power user either - for example, this last time, I simply had the fedex website and one other website open, and I was entering in details to prepare a shipping label. Something that should not cause a crash. And I do not have any extensions.

Is there any way to make Opera restore my last session when it recovers from a crash?

@sgunhouse It's completely empty, even if I hover over it. Interestingly, if I then delete the URL I'm entering and start entering it again, on the second try the suggestions list will usually appear.

Lately I've seen that when I start typing in a URL the suggestions list that drops down is often (but not always) empty. See attached screenshot. I only downloaded and installed Opera just a week ago, and it's already started to act weird like this. Is this normal behavior? it's rather disconverting.

https://i.postimg.cc/tRntJZjj/Screenshot-at-2025-04-2a2-21-28-19.png

Additionally, the file browser feature in Opera which lets me upload files has also stopped working today. If I click on any "upload" button in Opera, absolutely nothing happens - the only way I can upload files now is on websites that support drag-and-drop.

I don't have any addons installed.

Running Opera version is118.0.5461.41 on Linux Mint Linux 5.15.0-56-generic x86_64

Any ideas?