Can't upload files with names containing non-english characters

[OskarPersson]

When uploading a folder containing files with names containing non-english characters (such as 'å', 'ä' and 'ö') no files is shown as selected and I get the following error message: NS_ERROR_FILE_NOT_FOUND.

This only seems to happen when using Firefox (50.1.0) in Windows (7 and 10). I've tried it both on the demo site (using drag-and-drop) and locally (with this pull request merged) using the "Upload Folder"-button.

The following all works:

• Chrome 55.0.2883.95 - macOS 10.12.1
• Firefox 50.1.0 - macOS 10.12.1
• Firefox 50.1.0 - Ubuntu 16.04
• Microsoft Edge - Windows 10

[evilaliv3]

Thank you for reporting the issue @OskarPersson.

Together with @NSkelsey and @fpietrosanti we will perform few verifications and get back to you.

Feel free to provide a pull request if you come to a solution for the issue. That would be the more fast wayto get the issue solve! :)

[henrikek]

I have also done some testing and I get the same problem as OskarPersson identified. Error message "NS_ERROR_FILE_NOT_FOUND" does not say much, is there anyone who managed to get out a few more details about this problem? It feels like quite a lot of users should be concerned by this problem?

[OskarPersson]

I've investigated some more and created this Stackoverflow question and this JSFiddle

[e-alfred]

It also happens on Vivaldi 1.15 on Debian 9.

[AidasK]

Looks like a Firefox browser issue and not flow.js.