Error when reading user data with 3D AWH simulations

Summary

AWH simulations with 3 dimensions (or maybe more) cannot read user data input XVG files.

GROMACS version

2022, 2023

Steps to reproduce

gmx mdrun -v -deffnm awh -nb cpu -bonded cpu -pme cpu -ntmpi 1 -awh awh_t0.xvg

See details in the attached README file. awh_3d_userdata.zip

What is the current bug behavior?

Error in user input: Could not extract data properly from awh_t0.xvg. Wrong data format?