Oh crap. The foundation has moved and this is disconnected again.

Foundation inspection showing differences. That corner of the main house is heaving up rather than sinking down, and the addition is sinking slightly.

Photo by pest control showing foundation movement

Photo by pest control showing foundation movement

Photo by pest control showing foundation movement

September 2018 - Gate at this point was aligned, but became mis-aligned with the foundation movement.

January 2022 - sketch of foundation remediation plans

May 2022 - state of laundry room foundation before work started

June 2022

This shows some cracks, but they are somewhat minor, and it is before major work starts, so it isn't clear if the cracks are a cause or an effect. It might be that the crack are the reason we had the foundation company come in - that the laundry room addition was starting to move separately to the main house.

Cracks in Laundry room drywall

December 2023 Foundation inspection showing differences. That corner of the main house is heaving up rather than sinking down, and the addition is sinking slightly.