Bug#1113942: 6.16.5 affected, but neither 6.15.3 nor 6.16.1. Looks like a regression between 6.16.1 and 6.16.3.

[Philipp Klaus Krause]

I've now tried some of the kernels at 
https://snapshot.debian.org/package/linux-signed-amd64/

On 6.15.3 and 6.16.1, I cannot reproduce the issue, but I do see it with 
6.16.5.

So the last working version for me is 6.16.1-1~exp1,
and the first non-working is 6.16.3-1.

Philipp