When you push on this wall, either side of the door, the entire wall shakes visibly. Not like it’s going to cave in, but I thought it was unusual. But…I rarely push on walls and found this by freak accident. This end of the house was once a garage or carport that has been converted to a den.
When you push on this wall, either side of the (location) door, the entire wall shakes visibly. I recommend repairs, as needed by a qualified professional, to maintain structural integrity.