I was just about to post a similar thread/question. Please dev team @Opera do something about this. I ran into multiple occasions now where I wanted this functionality, this is something one would expect from a comprehensive browser as Opera.
Functionality like:

1. Select tabs by holding down shift and drag them loose; or
2. Select tabs by holding down shift and have a right click option 'move to new window'.

Is something that would be greatly appreciated.

Kind regards

I was just about to post a similar thread/question. Please dev team @Opera do something about this. I ran into multiple occasions now where I wanted this functionality, this is something one would expect from a comprehensive browser as Opera.
Functionality like:

1. Select tabs by holding down shift and drag them loose; or
2. Select tabs by holding down shift and have a right click option 'move to new window'.

Is something that would be greatly appreciated.

Kind regards