**System Information**
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.64
**Blender Version**
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-07 23:24, hash: `rB749d53effd58`
Worked: May 26 build works fine. May 31 is broken. I don't have builds in-between.
**Short description of error**
Adding a screw modifier to a curve/nurbs and tweaking anything in edit mode will increase file memory.
**Exact steps for others to reproduce the error**
Open blend file, press "G" to move and look at the memory.
{F7093969}
Or
Add a curve to a new scene, it doesn't matter if it's a bezier, path or NURBS
Add a screw modifier to this curve
Tweak anything in edit mode