Mouse-Icon when connecting two nodes in Linux

Hello all,
I am using KNIME on Manjaro Linux XFCE. By itself everything works, but when I try to connect two nodes, the mouse is always displayed incorrectly (see picture), which bothers me quite a bit. Is there any way to fix this error? Where is the folder where the icon for the mouse should be? Could I put new mouse icons in that folder?

Thanks a lot in advance.