No need
@Grzegorz Kl
do you have all Germany files? FDA? And latest globalcfg? Any skin? Some specific extra ux?
Delete cache (save folder), set the software again and try.
I also noticed that the rendering works strangely on some phones, eg, buildings appear and disappear, or are partially displayed ... The German map files have become very huge, it is difficult for the software to deal with them in urban areas.