Ok, so I'm sure this is a dumb question:
for some reason when im sketching and draw a line I can no longer drag the vertex point around, I can move the line but not modify the vertex points. When I draw a rectangle and try to drag one of the edges it seperates from the retangle body. In the sketch settings the "detach segment on drag" is not activated.
Can you activate that option, drag lines in the sketch and then deactivate that option. Also restart SW or your machine and check.