I just started using ZBrush with my new SpaceMouse 3d and love it but I noticed an annoying bug when using it with the split screen. When navigating with the puck, there is a “jitter” after moving the model which really makes it unusable.
Here’s to hoping it gets fixed in an upcoming update. 
Hi @Jesse.art
I can’t immediately replicate any issue that I would describe as making the SpaceMouse “unusable” with quick testing.
If you have a bug or technical issue with ZBrush that you would like to receive attention, you must report it at Pixologic Support. Technical Support is not provided on the community “Usage Questions” forums, and we don’t track technical issues here. If there is an issue in ZBrush or specific to your system, reporting it any place else will not get it fixed.
Thank you!
Win 10 Pro, ZBrush 2021.5.1; Space Mouse; seems ok here
Sorry I should have provided more info.
Mac Pro 2019
macOS Catalina 10.15.7
ZBrush 2021.5
SpaceMouse Pro Wireless
I have a screen capture of it but it won’t let me upload since I am a new user. But I will open up a ticket on this.
I went ahead and uploaded the screen capture of the issue on YouTube. If you look carefully, after moving the object, it will snap into another direction after every rotation.