drawer-pf-title in PF defines the width as 100%, while RCUE overrides this to be a fix 318px. This breaks if you have a 'X' to close the drawer while the drawer is expanded. The X will be 318px from the left of the >> icon instead of the right hand side of the drawer.
Looking at the drawer-pf-title css class in RCUE it is identical to the PF one, except the width, so IMO it makes sense to simply remove it from RCUE as it is not overriding anything useful.
drawer-pf-title in PF defines the width as 100%, while RCUE overrides this to be a fix 318px. This breaks if you have a 'X' to close the drawer while the drawer is expanded. The X will be 318px from the left of the >> icon instead of the right hand side of the drawer.
Looking at the drawer-pf-title css class in RCUE it is identical to the PF one, except the width, so IMO it makes sense to simply remove it from RCUE as it is not overriding anything useful.