Problem with .eml file extension when saving file with dots in the name

Hello, I’m not sure if it’s right place to ask/report such thing but I have a problem in Firefox when I try to save emails as .eml files. Everything is fine when filename doesn’t contain any dots but if it does… geez, just look at file extension Firefox tries to save as.

Definitely it shouldn’t be like that as in Opera I don’t have such problem (I have other problems though, lol).

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