I believe I have now figured out what's happening. Copying & pasting seem to append a trailing zero character, something that Firefox discards but Opera swallows. Further åäö are interpreted as åäö�

I have problems copying & pasting especially login info i.e. user and password into Opera (42) from some applications.
Exactly the same operations work without problems in Firefox. I guess it somehow has to do with character encoding.
What can I do. I am using Opera 42 on Ubuntu 16.04
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