DrawPlus X6: Strange redo behaviour

Hello,

there are worse things, but i think it is worth to mention,
because it is not intended, i think:

found accidentally when playing with an arrow (trying to draw a dartbord) changing and rezizing the arrow with the pointer tool and then clicking the redo resize button, the possible steps for redo seems to be endless in the resize bigger direction, although i did change it only once or twice...