Yes, a significant proportion of all scientific research is not reproducible e.g., "Over half of psychology studies fail reproducibility test" https://www.nature.com/articles/nature.2015.18248 Cancer research: "scientific findings were confirmed in only 6 (11%) cases." https://www.nature.com/articles/483531a

Those aren’t CS papers, social science and biology research have constraints that CS does not. I haven’t seen any evidence that there is anywhere close to that level of issue here. A couple of conferences adopted artifact review where an independent reviewer attempts to reproduce the experiments listed in the paper. Nearly all papers that participate do end up passing

One case where this happens a lot is papers that pick bad comparisons as state of the art. If you have the code, you can run it vs better configurations of existing tools to see if the promises still hold up.

> CS papers

I don't think any specific field was mentioned

Yes, that's what I tried to say. I can easily try a piece of code with my own data to verify that its results are plausible. I can't do that for a paper. So if I don't have the code, I might waste a significant amount of time trying to reproduce a fake paper.