for exemple, at Paris (france), at 16/07/2019 i see Jupiter in wrong place ( same for mercury, very bad position) but Saturn and Moon position is good.
For Mars and Venus, position is little bad
mercury position is very very bad.
In attached is see same sky at same position and same time : for Kstars (left) and stellarium (right).
The reason was the language. If set to English, everything appears correctly. The language issue was fixed so that non-English KStars shows the correct coordinates.