1. The incorrect behaviour fixed:

1. The incorrect behaviour fixed:

Create a sketch(two circles), create an extrusion(use sketch in OB), edit sketch(create a new circle). The result is the extrusion is not redisplayed for the last circle.
2. Hide of the features from the initialization plugin after creation. There is a blinking in OCC viewer.
TODO: emit a signal about block/unblock the OCC viewer update to avoid this blinking.