Old versions of Opera (until Opera 12, when it was not based on Chrome) used to be extremely advanced; in some aspects, it was much more advanced than Opera 104 (despite the fact that it was created about 15 years ago).
One of the features I enjoyed a lot on old Opera versions was its proxy / VPN settings. Opera's proxy did not depend solely on Windows proxy settings. Opera could use system proxy, but it also could use a second proxy set by the user. Moreover, it could also ignore system proxy and connect to the net directly. Lots of flexibility, intelligence, and power.
Today, only Firefox keeps such Windows-Independent proxy settings. All Chrome-based browsers lack it, and depend totally on Windows' proxy. Very dumb. Please be so kind as to implement this feature back into the Chrome-based Opera.
ps. I do know that all Chrome-based browsers can connect directly to the internet and bypass Windows' proxy using the --no-proxy-server command. But in Firefox and old versions of Opera (until v12), this can be done simply by clicking a simple option. Besides, in Firefox and old Opera versions, it is possible to turn it on and off while browsing. However, this --no-proxy-server command is not available in the middle of browsing. Very dumb still.
pps. Now, there is a very related power-user, super-awesome feature that is limited to old versions of Opera. Even Firefox lacks it. I will create a follow-up thread for that one. I asked it here: https://forums.opera.com/topic/67484/gui-toggle-button-for-turning-on-off-the-internal-proxy-vpn-settings-of-opera