No, I was watching a live channel when I started playback for a recorded program. When I dropped out of the recorded program, I pressed REC to record the current channel (what I was watching before recorded program playback). It began recording that channel from before I began watching the recorded program.
I was also able to record, from the start of the buffer, other channels I had recently watched. The amount of program recorded depended upon the amount of programming in the buffer for each channel.
I have Cox TV and you have Contour. It's a difference in how the two platforms work. Cox TV records from the buffer. Contour records from the live stream, regardless of how you start the recording. There isn't a setting to fix that.