Hello Armin,

 

thank you for this message. Actually the original files are from first quarter of 2017. Therefore I have no clue what I did at this time. Maybe I worked with 2 different versions of librecad on these files but I guess not..
I just found that the problem in S_8.dxf seems to be connected two line 1176. If I change the value there from 0 to 1 (according to S_7.dxf) the behaviour gets normal again. But how this value is changed via librecad - I cannot imagine.

Best regards robert