Not only an UI discomfort actually.
What happens to me most of the time:
While sequencer is running, press REQ to record in a synth line. Very often I hit the first note on the first bar a little early. This means the note is actually on the last bars last step. And no matter how you quantize it, when I start the sequencer, the first note is not played, because its on the other end of the pattern. It gets played the first time after the first loop.