@climanjaro https://forums.opera.com/post/156617 :
"Goto the URL opera://about and take note of the install path. Close down Opera and go to that path. Then, in the folder with the latest version number, rename opera_autoupdate.exe to off opera_autoupdate.exe."

I'm trying to understand how extensions works. Hence, I'm trying to create a test extension. My icon16.png does not appear at notification bar. It only shows default opera icon. How to do that? Thanks.
code:

chrome.storage.sync.set({'total': newTotal}, function(){

			if (amount && newTotal >= budget.limit) {

			var notifOptions = {
				type: 'basic',
				iconUrl: 'icon16.png',
				title: 'Limit reached!',
				message: "looks like you've reached your limit."
			};
			chrome.notifications.create('limitNotif', notifOptions);
		}
	});

I've found the solution from the youtube comments. Here is the comment:

"Okay so I got it. Basically your browser is configured to open the file in the browser itself. So, just right click on the file and save it. This will solve the problem..."

youtube link: https://www.youtube.com/watch?v=A0KtXBR2H1A&lc=UgxzG-V9XzXX5dMg1bt4AaABAg.8enSQ4VwI2a8esiEAX9HV-

https://dev.opera.com/extensions/effective-icons/user-icon.svg I couldn't download user-icon.svg file. It only display .svg file as html page.

The passphrase is the one you have created when you set up sync to use one in the synchronization section of Opera settings.
If you never did it, most probably Opera is asking for your old Opera account password or your OS password.

@omeralpaykadioglu @servett @muradcobanoglu @432007yavuz @wtspfrm @weyss @muazzez @yakupercan @mysticvezon

(eski/mevcut opera şifrenizi ya da işletim sistemine girerkenki şifrenizi deneyin arkadaşlar.) Umarım yardımcı olur.

The same here. Also, when I switch to another tab the problem occurs like the OP says.

@mixim-0 Süper!!! .)

@mixim-0
Şunlar işine yarayabilir:

• https://forums.opera.com/post/129146
• https://forums.opera.com/topic/15572/insecure-connection-problem
• https://www.sevenforums.com/browsers-mail/349137-opera-12-17-suddenly-not-working-some-https-sites.html

Kullandığın eklentileri devre dışı bırakıp dene. Eklentiler IP adresini manipüle ediyor olabilir. Cache ve cookies'leri temizleyebilirsin.

Ayrıca ayarlardan webRTC seçeneklerini değiştirerek dene bakalım. İşe yarayabilir.
Burada aynısını diyorlar: https://forums.opera.com/post/109917
https://forums.opera.com/post/108039

Solved. I installed Opera on Ubuntu with Snap. Downloading with snap, in font settings, (I wonder why) you can't see the "custom" option in drop-down menu. So I reinstalled Opera through Opera's web site as .deb file. now, I can see "custom" option.

in a word: don't download Opera with Snap. Download Opera through it's own website as .deb or .tar.gz

@linux17 said in Allowing pages to choose their own fonts:

Update: OK. I restart my PC and font problem has gone. It's OK right know

But, in Customize Font settings, there should be a "Restore settings to their original defaults". (only for font settings). Please forward my advice to Opera developers. Thanks