Openshot freezes all the time

Ubuntu 19.04, installed via apt
Arch: x64
I can't get the openshot version because the UI is frozen, but according to apt it's openshot-qt/disco,disco,now 2.4.3+dfsg1-1 all
ffmpeg version 4.1.3-0ubuntu1

Sometimes (rarely) it actually works, but usually the UI just freezes, often right from the start. It will freeze when opening a video file. It will freeze right after asking me if I want to save the project when I quit. It will start pre-frozen. When I run from the command line, it gives these two errors at the start:

timeline_webview:ERROR TimelineWebView::eval_js() called before document ready event. Script queued: $('body').scope().SetSnappingMode(1);
 main_window:INFO foundCurrentVersion: Found the latest version: 2.4.4
timeline_webview:ERROR TimelineWebView::eval_js() called before document ready event. Script queued: $('body').scope().MovePlayheadToFrame(1);

Then it spams this incessantly until I manually kill the process:

[AVBSFContext @ 0x7fb178bb46c0] A non-NULL packet sent after an EOF.