Light leak from WLF on P67 long exposures ?

[OAPOli]

From time to time I do have a shot with some subtle traces of light leaks when shooting in strong light at certain angles. I always tough it's just normal it happens sometimes but now I wonder if at least some of them were caused by this design flaw.
So I am thinking about adding foam all around the edge. Will probably do it but then again it's an expensive camera so makes me nervous. Maybe there is a reason they didn't put foam there. I suppose if something go wrong I just have to remove the foam.

In normal usage (fast exposure + face blocking the VF) the issue discussed here should not be relevant. Are those leaks similar to what you showed above? Strong light can cause ghosts or flares...

On my body I sometimes get a leak in the rebate area and frame. It occurred on 2-3 frames over a dozen rolls so I haven't been able to find the cause.