If you look at the design tree on the left margin, there is a horizontal blue line that rolls back upwards when you edit things. Anything below that horizontal blue line will get suspended/supressed while you are editing items above the blue line. This is because of the sequence in which sketches and features are created. When you have finished editing the feature/sketch, find the little icon along the [i]right[i] margin all the way to the bottom that looks like a miniature horizontal blue line and click it to regenerate all the features to the end of the design tree. SolidWorks operates the same way FWIW.