I encountered I encountered that lock scene problem with the game (dragon girl x) but so far, nothing on DGX Universe. I first download DGXU at 3.0 and download the updateof 3.5 without uninstalling the 3.0 patch
I didn't uninstall the 3.0 patch of DGX Universe while downloading the 3.5 version. Instead it updated the files letting me keep the archivements I gain. But it did mention they did mention in 3.0 of a scene not showing up on the nemek planet mission
