Tabs which were closed are re-opened when browser is opened again (after close)
I don't know if anyone has reported this and don't see it in the forum. This has been happening for a few weeks.
I always have about 15 to 20 tabs open but I use the feature to only load tabs when they are clicked.
During a session I will open more tabs and close them or others.
Then I close the browser and at some point open it again.
I then notice that some of the tabs I had closed in the last session (or some sessions ago if I didn't notice it right away) are still there.
Here is my version info:
Version: 48.0.2685.52 (PGO) - Opera is up to date
Update stream: Stable
System: Windows 7 64-bit