System Information
Operating system: Windows 10
Graphics card: Geforce GTX 980

Blender Version
Broken:
2.80, 2019-02-15 23:44, ec471a9b1c14, blender2.7, as found on the splash screen

Short description of error
Using dynamic topography and constant detail when sculpting collapses the mesh of the object.

Exact steps for others to reproduce the error
Based on the default startup.

1. Add new Ico Sphere.
2. Scale it to 10.
3. Switch over to sculpting mode

In the Dyntopo drop-down menu:

1. Use resolution in range 1-7, Subdivide Collapse, Constant Detail and check the box to use Dynamic topography.
2. Click anywhere on the mesh of the icosphere and watch it collapse.

This problem doesn't appear in the following video, https://youtu.be/0lj643VmTsg?t=95, using a previous build.