VNAV switch to PitchHold during descent

philipp00sk8

hi

I watch a couple a video on youtube and no body have the same problem that a have during a VNAV descent and i do the same thing the people do the set the VNAV. Everytime a cross a waypoint during a descent the VNAV descent light switch to pitch hold and the purple bar go's up like i was under the descent path....maybe i miss the do something.

thanks for your help

Philippe Tremblay

LeeSteventon

Mine does that when I select flap!