Copied jpeg image upload with MIME type image/png

[Lavisx]

From the web site I'm copy the jpeg image to the clipboard and used it in input.
After upload it report error about bad mime type image/png and there is accepted only image/jpeg

I'm used Vivaldi browser (use chromium) on MacBook

[GooglyBlox]

That's strange! I think I know the reason, but the extension is untested on Vivaldi and I'll run some tests myself before I'm sure. Would you be able to send the URL of the site you're testing it on?