El Capitan dock and cdock 2 problem
Reported and…

This has been reported to the developers as ticket 23:


  With the latest release of cDock2 the icons are up too high on the Dock, making contact wit the top edge of the Dock. See image.
  
  


Given this is an open source application, consider donating to the cDock maintainer. They will likely respond better if their efforts are rewarded.

…fixed in v0.10.4

The developer has responded to the bug report saying it is now fixed:


  Reverted in 0.10.4