[scribus] displacement of text because of adjacent contour line

[Albrecht Will]

Hi, 
If I move for example a lower contourline 2 mm horizontal down and let the 
text flow around then the upper textline or a single word will be disconnected 
from the previous word or letter.
Have I done something wrong or is this a bug?
Version 
02 Juli 2017 - SVN-Revision: 22167
Build ID: C--T-F-C1.15.8-64bit
Ghostscript-Version: 9.21