**System Information**
Operating system: Linux-5.0.0-21-generic-x86_64-with-Ubuntu-19.04-disco 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.34
**Blender Version**
Broken: version: 2.81 (sub 5), branch: master, commit date: 2019-09-02 20:51, hash: `rBd74cc6c08c42`
Worked: Blender 2.80 official release
**Short description of error**
Subdivision surface modifier doesn't affect objects.
Nothing changes when adding it, and I can't apply the modifier to the object neither.
**Exact steps for others to reproduce the error**
Simply add a cube and apply a Subdivision surface modifier to it.
Nothing changes, and I can't apply the modifier to the object.
Here is the a simple blend file: {F7714927}
Here is a view of the problem: {F7714928}
It also doesn't affect other meshes like monkey, spheres, ...
Thanks!