Replying to my own question: Updating to `dvisvgm` to version 3.0.2 (on Fedora 37) resolved the problem, i.e., the `stderr` contains the depth information. So the issue was not related to the preview package.
- Set background using \special{...} Dimitar Dimitrov
- Re: Set background using \special{...} jfbu
- Re: Set background using \special{...} David Kastrup
- Re: Set background using \special{...} Dimitar Dimitrov
- Re: Set background using \special{...} Dimitar Dimitrov