Large video not showing, thumbnail videos work

We have a forked version of jitsi-meet running. We had issues compiling webpack -p (performance setting limited output size), however after updating package.json (jitsi-meet-lib entries changed) to be the same as the jitsi-meet/master it seems to be working again. Despite that, we are having a strange issue where the video connects, but only the thumbnails are displaying videos, while the fullscreen video remains gray. Apart from that we didn’t change anything else and everything was working before the package update, any ideas what changed, and what else needs to be updated from the latest master?