Hello, i have been using the RaspberryPi HQ camera and it ocasionally gets stuck with only taking 3 second exposures.  If i set the exposure to 10 seconds.  Kstars/Ekos starts counting down from 10 and around 7 goes straight to Zero.  Then it start to download the image to my laptop.

Sometimes it works great and i can get long exposures to work.

I noticed this comment about grabbing a waste-frame.  What does this mean?  What is a waste-frame vs. a normal exposure?
github.com/indilib/indi-3rdparty/tree/master/indi-rpicam