When using vertex/edge/face tools to adjust meshes, the UVs aren't re-adjusting with it.
Maybe this was functionality moved elsewhere rather than being automated with mesh resizing, but I don't immediately remember it being documented anywhere.
Examples:
Most direct comparison (left is skewed from mesh resizing, right is the expected proportion for the texture)

In this picture, you can see the default texture also getting skewed and some examples of wall textures getting skewed. The ceiling is the expected proportions.

Let me know if I've missed something and this is not actually an issue.
When using vertex/edge/face tools to adjust meshes, the UVs aren't re-adjusting with it.
Maybe this was functionality moved elsewhere rather than being automated with mesh resizing, but I don't immediately remember it being documented anywhere.
Examples:
Most direct comparison (left is skewed from mesh resizing, right is the expected proportion for the texture)

In this picture, you can see the default texture also getting skewed and some examples of wall textures getting skewed. The ceiling is the expected proportions.

Let me know if I've missed something and this is not actually an issue.