[BitBucket user: Alain Mazy]
[BitBucket date: 2018-12-28.08:49:51]

concerning https://askubuntu.com/a/981426, I had seen it and tried the workaround without any luck.

I agree with you: we shouldn't lock drag-and-drop so the solution is:

- on Firefox, add a textual warning
- add a Browse button for everyone