Hi eric, thanks for letting me know. That's a bummer that it is happening some more.

One thing that may work that's quicker than a full reboot is to use this keyboard shortcut: Ctrl+Win+Shift+B - on Windows 10 that will restart the graphics driver and it's likely to be as effective as a full reboot.

Hopefully it's something they will solve with a driver update.

re: arrayed solid becomes joined surface, that's not too likely to be related. It could be possible for that to happen if your solid had any areas of self-intersection in it, that can make a volumetric analysis of the object to behave inconsistently.

If you'd like to e-mail me the base object + copies that are behaving strangely I could take a look.

- Michael