QLab 5.4.4 Release Notes
 When opening workspaces saved prior to QLab version 5.3, the end times of audio and video cues will be preserved correctly.
 A regression in video rendering that could cause a green flash when starting Blackmagic outputs running in Y'CbCr pixel format in some circumstances.
 A bug that could prevent being able to set a Fade cue that targets an audio patch to Absolute fade mode.