LW50 - it's only a "problem" because it doesn't meet the requirement, which is to accommodate 95 per cent of the US pilot candidate population, with nude body weights between 103 lbs and 245 lbs.* No other fighter was designed to this, and I think the only ejection-seat-equipped aircraft that does is the T-6A.
The 95 percentile spec is pretty tough, and may be excessive. It starts to encompass a wide range of limb-to-torso ratios or, as someone from St Louis once put it, "some rather strange-looking individuals".
* If anyone needs brain bleach after thinking about a nude 245 lb fighter pilot, sorry, but I didn't write the spec.