Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-24 14:22, hash: rB507ffee6e1f4
Short description of error
I'm doing boolean operations, where I want to use UNION to weld the parts together. It works fine, but after a few operations, UNION stops working.
I have found out, that if I then swith it to DIFFERENCE, it works exactly as UNION.
Next time I use UNION it works fine again.
Exact steps for others to reproduce the error
I have not been able to determine the exact sequence, but even if I restart Blender RC3 from scratch with my file it still does it within the first 5 or six boolean operations.
I'm pretty sure it also did this in RC1 and RC2, but I used to drop what I was doing and move on to something else.
But for RC3 I did a little digging and came up with switching to DIFFERENCE, which took over the role of UNION.
I only noticed because the outline changed to what I would expect with UNION.