'Waiting for more keys'?

When type `C`, the status bar prompt 'Waiting for more keys', failed input the char `C` what i want.

Start by reproducing the issue in the terminal interface by typing C and observing the status bar prompt. No file, test, or entry point is named; trace the key-input path and identify why C is treated as an incomplete key sequence. Done means typing C inserts the character instead of showing “Waiting for more keys.”

Written by the indexing model from the issue text.