Coursepress data saving and file type

Hey guys,

Hope you're fine today !

I've noticed that when a user submit a file in the "file uplaod" element, if the file extension is not supported, the user still receive "The data has been saved successfully". The user thinks that his assignment is successfully sent now, but thats not the case. So is it possible to test it on your hand to confirm the issue ?

Thx for your time