Indeed, I used the Focus module on the Guide camera.
I guess that if I avoid doing such, and perform the focusing on PHD2 instead, it won't happen again.
I tried guiding with phd2, experiencing the same issue, with pictures coming up continuously on the Fits Viewer. I restarted KStars and avoided using a cam in Ekos prior to start up phd2. Issue still occurred.
I checked, the box "receiving external frames" was not checked.
So maybe there should be an easy way to block this. It can be done from INDI Control Panel, but I guess that is not obvious for most users. I thought of adding "block" button to FITSViewer but then I don't want to clutter the interface. Might add a separate "Block Stream" button.
I added a way in the Guide module now to disable blob from CCD by selected them from the list. This way you can still use it initially in KStars and then disable it later.
...now I have implemented KSTARS 2.8.2. Sorry, I shoud have checked before.
The new "way in the Guide module" that you were adding - will that be available in a future KSTARS (e.g. 2.8.3) release or via updating of the indi library?