Passenger seat electrical controls not working after a new windscreen was fitted

This might be just a coincidence. But I have just had a new windscreen fitted following a rock being thrown up by a lorry's wheels hitting it, which left a small chip, which after a few days became a long crack and was growing.

The screen was replaced last week, and yesterday I discovered the seat was not responding to the controls. I cannot see any fuse listed in the owner's manual which states it supplies power to the seats. The driver's seat is working as usual, which made me think it must be fuse-related, but the fuse chart makes zero reference to any fuses.

Any ideas?