Opera Developer 38.0.2205.0
Mac OS X 10.11.0 64-bit

After installing Opera Developer, keeps reverting to Opera Mail no matter how many times I try to set Apple Mail to be the default client in Apple Mail Preferences. The Share button in the upper right shows only Messages and More... .If I click on More..., Opera Mail, Messages and AirDrop are selected and grayed out, so they cannot be deselected.

It's driving me crazy and it's screwing up all the other browsers' email buttons, which also seem to default to Opera Mail

I don't use or even have Opera Mail. I want to be able to send emails with links from my Apple Mail accounts. Any idea how to fix this?

Also, when it worked for the first few times after I installed Opera Developer (which I totally love!), the email Subject was left empty. All other browsers would normally fill the Article Title.

Thank you!