<r>the problem was resolved for the Manjaro-Kde plasma system.<br/>
To test it, you must run sweet home 3d through the terminal:<br/>
<br/>
command line to execute:<br/>
SWEETHOME3D_JAVA3D = 1.5 sweethome3d<br/>
<br/>
link to the open topic in manjaro where you can find more information.<br/>
<br ...

so how can i offer useful data to solve this?
believed that it was just a java bug in the manjaro repositories (arch-linux) and that updating or replacing the repository would suffice.

<r>apparently there are conflicts with the java package.<br/>
<br/>
terminal exit when launching sweet home 3d application.<br/>
<br/>
WARNING: An illegal reflective access operation has occurred<br/>
WARNING: Illegal reflective access by javax.media.j3d.JoglPipeline (file:/usr<br/>
/lib/sweethome3d ...