@philou-69210 Problem resolved after renaming the ".config" in my home directory (in ".config.old"). But it's a lot of pains because all my applications have lost their configuration. So I had to move some application's directories one by one between ".config.old" and the new ".config" directory until they recover their datas I couldn't found where was located the Opera's configuration problem.
I had this problem with Opera Linux and not Windows.
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