Go to Settings and search for "Tab"
Find the line where it says "Show Tabs from the same Domain..." and Turn off that option. 
Best posts made by donpark1
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Opera for WindowsRE: How to disable tabs list popup?
Latest posts made by donpark1
-
Opera for WindowsRE: How to disable tabs list popup?
Go to Settings and search for "Tab"
Find the line where it says "Show Tabs from the same Domain..." and Turn off that option.