I've seen some weird behaviour (on OSX) when zooming in and out specifically, but am not sure it's the same problem. I'm using the overlay indeed and zooming in or out a bit fixes it so didn't really find it very annoying.
Yes, that did the trick! Thank you!
However before I changed to "none" under "View -> HiPS", nothing was selected at all!
And now, if I select e.g. "HiPS -> DSS colored" or one of the other two default options all seems working perfectly and it looks just great!
Ok, now I did a few times zoom in and out using the overlay an run into the same "problem". And as supernov mentioned zooming in or out a bit fixes it.
If what you guys are seeing here is that when you zoom in and out the HIPS image stays the same or lags a little, but then later after you zoom in and out and wait for a minute, it seems to now work properly when you zoom, I think that might be just that you don't yet have the HIPS images for that zoom level downloaded yet. The HIPS images are cached on your computer, but they are downloaded and loaded on demand as well. So the first time you look at an area of sky at a zoom level, it wont have the image(s) ready and needs to load them, but later if you come back to that area and/or zoom level, the image(s) will load almost instantly from the cache. Does this sound like what you are seeing? Increasing the cache size, zooming in and out on regions of interest, and a fast internet connection should all help if it is the problem.
By the way, I can reproduce a graphics glitch.
When I open "What's interesting" for the first time in a kstars session there is nothing but a white screen.
Then close and open again "What's interesting" and all seems working ok.
Now click on the "eye" icon and voila, there is the glitch.
Closing what's interesting will remove the glitch.
Yes, I have seen this too. I am not sure what causes it because it did not do that in the past. As far as I know, nothing changed about the way what's interesting gets opened. I will look into it when I get a chance.