embind vector get() function not returning same values as block access with ptr directly from heap

Javascript function looks like this:
```
const frame = instance.RetrieveFrame();

const newArr = new Uint8Array(frame.buffer.size());
for(var i = 0; i < frame.buffer.size(); ++i)
{
newArr[i] = frame.buffer.get(i);
}
console.log(newArr);

const data = new Uint8Array(HEAPU8.buffer, frame.buffer.$$.ptr, frame.buffer.size());
console.log(data);
frame.buffer.delete();
frame.buffer = data;
```

I may just be expecting the wrong thing but `frame` variable is a struct and `frame.buffer` is a registered vector of unsigned char. I was assuming that creating a new uint8 array from the vector.$$.ptr and it's size would be the fastest accessor but it is giving me different data from iterating over the get function element by element. When I iterate each element I get the full expected frame but not when accessing the heap. I can show more code if needed but I was trying not to be overly verbose to start with and maybe someone would look at this and immediately recognize that I'm using it wrong or that my expectation for

` const data = new Uint8Array(HEAPU8.buffer, frame.buffer.$$.ptr, frame.buffer.size());`

is off base. Thanks in advance if anyone gets around to responding.