USB-C charging from upper USB-C not working Pro 10 for Business

Device information:
Device name: *
Serial number: BK6*4
Surface model: Surface Pro 10 for Business Model 2079
SAM: 29.4.139.0
UEFI: 13.1.143.0
App version: 74.6030.188.0
BIOS Version/Date: Microsoft Corporation 13.1.143 04/03/2024
Wi-Fi driver: 23.40.0.4
Edition: Windows 11 Pro
OS build: 22631.3810
Processor: Intel(R) Core(TM) Ultra 7 165U
Installed RAM: 64 GB
Storage size: 584 GB free of 951 GB
GPU: Intel(R) Graphics
Screen resolution: 2880 x 1920

Original Install Date: 2024-04-23, 04:35:54
System Boot Time: 2024-07-05, 21:06:53

OS image: "from the box", no reinstall

WU: Nothing lingering, everything up to date.

This is a bit strange. Can't get my device to charge from the upper USB-C port. Is this expected / by design?
Couldn't find any documentation on the subject. My other machine, a Surface Pro 8, happily charges from either USB-C ports.