As description says the border of the Property toolbar leaves a trail when I drag it around the screen (see the attached photo). This happens on Windows 10 Pro x64 1901 build 18363.535, processor Core i9-9900RF, video: NVIDIA GeForce GTX 1660 Super, 16 GB RAM. However, I can reproduce this bug even on a much weaker device like Microsoft Surface Pro with Core i5 7300U on it and when I use the Pen instead of mouse. Acrobat DC Pro full version is 2020.009.20065