incorrect reductions after reshaped()

Summary

I obtain incorrect reductions after reshaped()

Environment

• Operating System : Windows
• Architecture : x64
• Eigen Version : 3.4
• Compiler Version : MinGW64 / GCC12
• Compile Flags : -O3
• • Vector Extension : Intel(R) Core(TM) i7-1065G7 CPU

Minimal Example

#include <iostream>
#include <Eigen/Dense>

using namespace std;
using namespace Eigen;
typedef Matrix< double, Dynamic, Dynamic, RowMajor> matrix;

int main(int argc, char** argv) {

int draws = 100;
int blocksize = draws / 10;

matrix input = matrix::Random(draws,3);
ArrayXXd blocks = input.col(0).reshaped(blocksize, 10); 
cout << "blocks = " << endl << blocks << endl << endl;

cout << "ERROR: blockSums = " << input.col(0).reshaped(blocksize, 10).colwise().sum() << endl;
cout << "ERROR: blockMeans = " << input.col(0).reshaped(blocksize, 10).colwise().mean() << endl;

cout << "OK: blockSums = " << input.col(0).reshaped(blocksize, 10).eval().colwise().sum() << endl;
cout << "OK: blockMeans = " << input.col(0).reshaped(blocksize, 10).eval().colwise().mean() << endl;

}

What is the current bug behavior?

Reductions on the reshaped() view produce incorrect results.

What is the expected correct behavior?

I expected reductions on the reshaped() view to work without requiring an .eval(); error is difficult to track down.