I’m able to reproduce using Unity 2018.3, I will get this fixed asap.
Edit - I lost the ability to reproduce after re-importing the entire project. If this is feasible for your project size, can you please try this and let me know if it works for you as well?
This reproduces 100% on my machine and I was able to track it down to s_PickingDistance being 0. Because of that if (pickedElementDistance > pickerPreferences.maxPointerDistance) in DoMouseClick is basically always true, which shortcuts into selecting nothing.
I also see that s_PickingDistance was intended to be a configurable setting, but because no category and title are set for it in ProBuilderEditor.cs it doesn’t show up in Unity. Also from that file, I see that the default value for s_PickingDistance was intended as 128 so how it becomes 0 I don’t know.
I have fixed the issue for myself by making s_PickingDistance configurable in Unity by setting a category and title for it and then set it to something larger than 0.
Just wanted to chime in. I’m having this problem as well with pro builder 4.1.0, Unity 2019.2.6f1 on macOS Mojave 10.14.6. However, I was able to fix this issue by going to the pro builder preferences and doing “reset all”, just as [artysta]( [Bug] Since ProBuilder 4.0.4 on MacOS 10.14.5, you cannot select faces, edges, or verticles members/artysta.12243/) mentioned.
Yes, going to Probuilder’s preferences and “reset all” worked for me too. What a frustrating bug! I couldn’t even do the most basic things needed to use probuilder…this to me is a very serious bug (for Mac users)