Different Wiimote behaviour on connection attempt. 1+2 vs. SYNC

[myscha]

I always have to SYNC after starting a game, that means SYNC on the Wiimote and SYNC in Dolphin. When I stop the game after successfully syncing, start another game and press any other key on the Wiimote, the LEDs on the Wiimote blink for 20 or 30 seconds and then go dark again.