Tested on iOS 9.3.5, iPad 2.
VLC 3.3.0 (400 & 401) from TestFlight
The version from the AppStore works (3.2.13) so possible regression
I can navigate the menu, explore the file servers (Jellyfin UPnP/DLNA & FTP) and change settings but once I start playing media from a network stream (audio or videos) from the file servers or even locally, it crashes the app every time.
I've already tried switching between the old and new player from the Lab settings but it still doesn't work.
Edit: Tested on another device (iPhone 6s, iOS 14.8, VLC 3.3.0 (401)) and when playing from the FTP server, it only closes the player but stays in the app. I've tried downloading the media and playing fom the local storage and it works.