I have checked and you are correct. The issue has been logged for fixing. Currently, you can try setting MaxFileSize
to 0 and allow bigger than 1GB files to be uploaded.
I apologize for the inconvenience.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items