Is there a Blueprint method to manually rebuild nav mesh?

Development Programming & Scripting AI
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6

To force a nav rebuild on a particular component, call:

FNavigationSystem::OnComponentUnregistered(TheComp);
FNavigationSystem::OnComponentRegistered(TheComp);

Or the equivalent for a single Actor (OnActorRegistered()).

Need to

#include "AI/NavigationSystemBase.h"

You can make a BPFL with this code if you want to call in BP.