A bug in the section view ?

Hi,

opening this asm, i make a section view, with right plane as section.

I want to edit the hub-revolve1-sketch1, in the Edit Part mode.

At opening, the sketch decides to dance a boogie-woogie.

How can I stabilise this part ?

There is another "bug", a bit uncomfortable : if I click on a part of the asm, in section view mode, a click on a face contained in the plane section don't highlight the part in the Featuremanager.

When 30 or 40 parts in the asm, it's a bit boring.

Tx for your help.

SolidworksParts And Features