If you're doing a barometric RNAV intermediate approach to an ILS, there are often times when you will *have* to intercept the GS from above, due to temperature error, even though the altitude constraints at the intercept point are theoretically on the glideslope.
A good example of this is the RNAV transition to RW15 at GIG (SBGL).
In fact, any hard altitude restriction nominally coincident with an ILS GS will produce this scenario in >ISA temps. We tend not to notice because we are usually intercepting from below and GS capture takes precedence over ALT hold and FMC constraints, so the descent will start before you actually get to the waypoint/distance on the chart.