Qt warning "Failed to build graphics pipeline state" with Metal RHI

After we switched to Metal RHI on macOS, I started noticing new Qt warnings in our automated tracking system.

Failed to build graphics pipeline state

Failed to create render pipeline state: Attribute 7 refers to a buffer index 3 that is not valid.

The second one only seems to happen on certain Macs with Intel processors, such as
iMac 27" (2014/2015)
MacBook Pro 15" (Retina, Mid-2015, B)
MacBook Air 13" (2015/2017)
MacBook Pro 13" (Retina, Touch, 2018/2019)

It doesn't seem related to specific macOS version. There are cases on any macOS between 14.1.1 - 14.6.1

Since this happens only on users' side, I have no any simple reproducer.