Version : 57.0.3098.76
OS : 10.14.1
Still happening too. It has been less frequent in the past weeks but the 4-in-a-row from the last minutes really got my thinking changing my browser. Fixes help but never completely solve the problem...
Came here to open a thread for this.
When typing something into address bar and hitting ctrl+enter doesn't complete the domain name but adds a new line to the address bar like a text editor!
Guys at Opera are generating ten different bugs for every single bug they fix.