The download button redirects the newly generated (cropped, trimmed, rotated) video instead of popping up the download dialog box.
Tested in Mozilla and Google Chrome.
Repos:
VideoCutTool-front-end: https://github.com/gopavasanth/video-cut-tool-front-end/
VideoCutTool-back-end: https://github.com/gopavasanth/video-cut-tool-back-end/
The download button code is here: https://github.com/gopavasanth/video-cut-tool-front-end/blob/master/src/components/home.js#L997