Weird Gumball Behavior In Rhino 8

HI,

Yesterday the Gumball worked fine and today I can t extrude the edges of my SubD either with Gumball or the Extrude function. The extrude function doesn t even allow me to extrude either faces or edges. It s unclickable and the Gumball whether I select a Face or Edge there are no extrude handles and sometimes when I select a face ( but rarely ) the Extrude handles appear but again only for faces never for edges.

Am I missing something ?

PS : I have the latest version of Rhino V8

Thanks

EDIT: OK I think I know why. It s due to the reflected side of my SUBD. One side I cannot apply the extrude but the original one I can. Sorry about that