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Only certain types of files work with PasteEvent. Pasting multiple files never works

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dafman6
dafman6
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MacOS Big Sur 

 Version 11.6

Firefox Developer Edition 

 Version 96.0b6
 Build ID 20211216190150

There's some unexpected behavior when pasting files from the OS, in my current case from the Desktop, into the browser. As a minimal example I have open the following url [data:text/html,] then running the code in the first attached image (code.executed.png) in the develop console to get test output when I paste.

Copying a `.png` image on my desktop to the clipboard and pasting within the browser I see what I would expect, which would be a file with a valid type in the event's `event.clipboardData.files` property. As seen in the second attached image (single.png.png).

However, when I switch to copying multiple files, or a file of a non-image type (I've tried `.txt`, `.xlsx` and `.pdf`) it no longer has any file within the before mentioned files property (multiple.pngs.and.single.txt.png). On Chrome I've correctly received the files, and I'm unsure if this is in relation to security, being incorrectly configured in FF, or just a bug.

Thanks in advance.

MacOS Big Sur Version 11.6 Firefox Developer Edition Version 96.0b6 Build ID 20211216190150 There's some unexpected behavior when pasting files from the OS, in my current case from the Desktop, into the browser. As a minimal example I have open the following url [data:text/html,] then running the code in the first attached image (code.executed.png) in the develop console to get test output when I paste. Copying a `.png` image on my desktop to the clipboard and pasting within the browser I see what I would expect, which would be a file with a valid type in the event's `event.clipboardData.files` property. As seen in the second attached image (single.png.png). However, when I switch to copying multiple files, or a file of a non-image type (I've tried `.txt`, `.xlsx` and `.pdf`) it no longer has any file within the before mentioned files property (multiple.pngs.and.single.txt.png). On Chrome I've correctly received the files, and I'm unsure if this is in relation to security, being incorrectly configured in FF, or just a bug. Thanks in advance.
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