after 5 months of bad weather I managed to capture a few photons tonight. A few things that caught my attention:
Constellation lines, names, art and boundaries didn't show.
Guiding is not suspeded when focusing is started, even when "suspend guiding" in the focus tab is activated.
Comet magnitudes are wrong
I git-pulled again today and the issue appears to be resolved. Make sure you update to the latest stellarsolver before compiling kstars. Possibly commit 24d0806b577a468c6580d8ae62ce349d93ff2128 did the trick. Thanks a lot!