The rollers catch and bind up.  Need to keep going from side to side to open or retract.   The dark color cloth radiates heat when sitting under it in the sun.
Not sure what's going to happen when it gets snow on it this winter.
Update- first rain and the water ponded on the shade and started seeping through the material. Had to keep brushing with a broom to remove water ponds on top. 90% sure will have to remove the fabric before winter snows.