Erase tool does not do what I wanted it to do

Hello,

I am Alex Damgaard, I am new to this forum.

I am playing around with a logo idea and I am having trouble getting the erase tool to erase part of an elipse shape in Corel Draw.  I select the erase tool and click and drag accross the part of an elipse that I want to get rid of (so far so good), then I release the mouse and an outline of the nib tool is left behind.   This is not what I would expect to happen.  I have read up on the subject, but I still don't know what I am doing wrong.

I saved my error as a JPEG that is attached for your scrutiny.

Thanks in advance,

Alex