Undo radius corners

LightBurn Software Questions
1

Is there a way to undo a radios corner? For example I created a box and changed the corners to .25. I closed the file and reopened it and tried to set the corner to 0. However the control is unresponsive. Is there a way to undo the radius curve once applied?

Thank you

2

Yes, set the radius back to .25 and click on the radius. It should return to square unless you modified the nodes otherwise.