Bug with Intel HD Graphics 520 driver
Premiere Pro CC 2019 has a bug with Intel HD Graphics 520 driver (v184.108.40.20626). Whether it is the ellipse mask, 4-point polygon mask, or free draw Bezier mask, the path does not show in the Program Monitor Window. Toggling on/off the Mercury Playback Engine will temporary show the path but only once. Then have to toggle again.
Please fix it.
Brian Chau commented
Forgot to mention that I was using a Thinkpad X1 Yoga laptop running Windows 10.