This is a duplicate of 0036858. The first upload failed with an "unsupported format" error. I tried uploading an SVG file. :-(

The first upload failed with an "unsupported format" error. I tried uploading an SVG file. :-(

@raspopov this is due to default setting $g_disallowed_files = 'svg'; to fix 0029135

this is due to default setting

Yes, I know about that. However, the browser interface looks almost exactly the same as it did before the issue was submitted. There was only a message about a file download error, and everything pointed to simply deleting the file that wouldn't download from the form and adding another file instead. It seemed to me that the form wasn't sent to the server at all. That's what led to the creation of a duplicate. Perhaps we need to cancel the form submission if the file fails to upload.

I checked the code and found that there isn't enough verification of the files being uploaded in IssueAddCommand::validate(). This causes the issue to be created and then interrupted halfway through the upload process.

I created issue for this case: https://mantisbt.org/bugs/view.php?id=36861