Updating to 3959 driver limits DirectX 9 texture resolution to 8192

After updating the Intel Arc Driver from 3802 to 3959, it seems that the supported texture resolution from the API is limited from 16384 to 8192 due to the DirectX 9 driver change.

In addition, Intel Arc confirms that x16 MSAA is only supported on OpenGL Vulkan DirectX11 DirectX12, but is there a reason for the restriction?
At least in the past Skylake Gen9 Graphics supported 16x MSAA even over DirectX 9.