@sgunhouse
I have this problem too.
I uninstalled Opera and reinstalled it. This problem has ocurred again . That isn't a extension.
I ran malwarebytes and can't find any malware.
This problem occurs even Opera uninstaltion.

@donq
In Chrome

In Edge

In Firefox

Now there is a strange problem.

When I try to login in opera account to post here, this screen is shown

I logged in Chrome to post this.

Now there is a strange problem.

When I try to login in opera account to post here, this screen is shown

I logged in Chrome to post this.

@donq
In Chrome

In Edge

In Firefox

@sgunhouse
I have this problem too.
I uninstalled Opera and reinstalled it. This problem has ocurred again . That isn't a extension.
I ran malwarebytes and can't find any malware.
This problem occurs even Opera uninstaltion.