I find agree, legacy OpenGL acceleration (after ASentientBot fix) works better on .5 beta2 than 10.14.4 final build.
You know, to me Flurry screensaver working again is a clear signal that all the main "GL issues" are gone, apart the Siri oscilloscope wave that @gosvamih has already tested, another big proof is that, I've tested right now, Chess.app version 3.16 is working correctly on .5 beta2 OpenGL rendering accelerated.
These are positive signals that on late June 10.15 with OpenGL will be still possible.
What is @ASentientBot's fix and how does it help with OpenGL acceleration? would this help me get GPU acceleration back on my 2011 8,1 MBP running Mojave via @dosdude1's patcher??