@VivaldiUser2 What is your version of Windows, so I can see if I can reproduce your problem?
I have multiple instances of the latest Vivaldi on Win10 64-bit, Win7 32 Bit and Win10 32 bit, and none suffer the problem you describe. None of them. However, if you can say what your version of Windows is, I can try to reproduce it.
Removing write/modify access of the logged on user to the widevinecdm has seemed to stop the update of 4.10.1146.0 to any higher non-working version. I've had the browser open for over 2 hours playing Netflix and it usually updates by now to a higher version but has not done so since the permissions changes.
In case anyone cares to follow suit.
Not sure how this is going to affect overall functionality, however, since I've noticed nothing out of the ordinary and I've only change permissions on the wide-vine directory and not the whole profile directory I think I'm good.
So I was wondering why my 64-bit system had 32-bit Vivaldi. Looks like the older forum posts are saying 64-bit is not ready for prime time, but now it seems the web page just defaults to 32-bit unless you dig for the "other systems" page and explicitly choose 64-bit. So I installed 64-bit. It first opened with the brag page about the new Quick Commands, and About showed that in the command line:
I closed it and re-opened it (had to replace my taskbar icon), and the link was gone from the Command Line. So I guess that "About" display shows whatever started the current run of the browser - not some cast in stone default command. The Economist suspicion above was probably meaningless.