Matrix is skewed and display is not correct.
This is an edge case, even if it’s not that difficult to repro.
Bounding box gizmo only work with orthogonal matrices. I think best is to warn user whern getting that state and at least, not modify the object matrix to not explode its scaling.
If you want to get further when non uniform scaling then it’s your responsability to bake from a sibling transform to another (which makes sense)