[Bug]: Possible inconsistency with xarray when spanning across files

[gleckler1]

What happened?

See attached markdown file prepared by Andrew Manaser (RSS). xcdat_open_mfdataset_issue_README.md

What did you expect to happen?

This problem occurs when using the open_mfdataset method with xcdat (occasionalloy called xc in this document) to concatenate multiple files of monthly average gridded lat/lon geophysical netCDF4 data along a new axis (in this case time)

Minimal Complete Verifiable Example

No response

Relevant log output

No response

Anything else we need to know?

No response

Environment

Should be included on attached file.