I'm getting a can't increment vector iterator past end exception when doing an FTS query over some book data. The offending code is here:

https://github.com/realm/realm-core/blob/063927de66f79a0afffbbe36c0bb14d27deba8f2/src/realm/index_string.cpp#L1223-L1226

Looking at it, it indeed doesn't seem correct as we're erasing an element from the vector and then incrementing the iterator, which can clearly push it past the end of the vector once we erase the last element.