This is happening to at least two seats of Civil 3D in are office that I am aware of. After selecting the Offset command from the ribbon, if you key in a value larger than 2 digits, the second is not registered if keyed in to quickly. There is a delay and one must wait to key in values greater than one digit or the second is missed. This happens with other commands that a numeric key in is an option.
We have contacted our software provider who accessed logged onto our system remote and suggested a repair/reinstall. That did not solve the problem and I would like to avoid performing a complete uninstall and reinstall of the software.
Anyone have or have had this problem and found a solution?