Plain and simple, zooming or panning in 2019 CorelDraw leads to portions of the displayed object area to be blanked out. Zooming out and back restores this obvious display buffering failure... but as soon as the zoom in is done again, or a pan is done, then blank out..
i am also facing the same issues in my corel draw 2021 ---
i m using dell pc I7 10th gen + 32 gb ram + 5 gb quardro p2200 gPU, but it work like very slow pc
my freind also facing the same issue
while dragind text gone blures and images diapear for a few seconds