Denon SC-5000M loop adjustment phenomen


I have strange phenomen with the loop adjustment at the SC-5000M.

After I set a loop and want to adjust loop out point I push the loop out button and the loop out button blinks, but when I turn the Vinyl no reaction.

When I Push the loop in button I could adjust the loop in point, so everything works fine.

When I first adjust the loop in point, then I could also adjust the loop out point. Do anyone has also this strange experience?

Firmware 1.4.1 Quantise OFF

Has anyone also this phenomen?

The platter has to stop spinning for the loop in and out adjustment to work.