sure thing - I upgraded to 5.16.1 using mamba update pymc, which I can see is the latest release on the github repo too, and can confirm I’m still seeing the same behaviour as well as the warning. Happy to try something else, too. BTW - was the reproducible script helpful? If you have time, I’d love to know if you see the same warning or if it’s specific to my set up (M1 MBP).