Spe Station Contract Bug - Booster Pe < 78.1km condition won't register

v1.308+ beta, hybrid mode save [including fresh new hybrid mode save]. With the Spe Station Contract, after one reaches the desired orbit and stages the Radix Module into the desired orbit, the next step is to have the booster burn retrograde to lower Pe to below 78.1km, to deorbit the booster. Bug seen: after booster's retrograde burn lowered Pe to satisfy Pe < 78.1km, it won't recognize the [Pe <78.1km] condition was met.