If a creature in an extradimensional space is subject to an effect that prevents extradimensional movement does the creature drop out of the extradimensional space when the spell that created the extradimensional space ends?
For example, a creature is affected by the spell dimensional anchor while in the extradimensional space created by the spell rope trick (perhaps cast by another in the same rope trick extradimensional space). Normally the creature "drops out when the [rope trick] spell ends" but the spell dimensional anchor "completely blocks extradimensional travel."
Is the creature who's the subject of the dimensional anchor spell and present in the extradimensional space when the rope trick spell ends essentially removed from existence, the resident of a now-destroyed extradimensional space?