merge_archives creating corrupted archives

[JulianDicken]

Describe the bug
Merging archives via merge_archives creates a corrupt archive => Using a zip file viewer shows the files as existing but the archive is not able to be decompressed

To Reproduce

let rdb_output_file = File::create(&self.path_out).unwrap();
        let mut rdb_output_bufwriter = BufWriter::new(&rdb_output_file);
        let mut rdb_output_zipwriter = ZipWriter::new(&mut rdb_output_bufwriter);

        for thread_path_out in thread_paths_out {
            let rdb_temp_file = File::open(&thread_path_out)?;
            let rdb_temp_archive = ZipArchive::new(rdb_temp_file)?;
            rdb_output_zipwriter.merge_archive(rdb_temp_archive)?;
        }
        rdb_output_zipwriter.finish().unwrap();

Desktop (please complete the following information):

• OS: macOS Sequoia 15.11
• Version 2.2.2

Additional context

let rdb_output_file = File::create(&self.path_out).unwrap();
        let mut rdb_output_bufwriter = BufWriter::new(&rdb_output_file);
        let mut rdb_output_zipwriter = ZipWriter::new(&mut rdb_output_bufwriter);

        for thread_path_out in thread_paths_out {
            let rdb_temp_file = File::open(&thread_path_out).unwrap();
            let mut rdb_temp_archive = ZipArchive::new(&rdb_temp_file).unwrap();

            for i in 0..rdb_temp_archive.len() {
                let file = rdb_temp_archive.by_index(i)?;
                rdb_output_zipwriter.raw_copy_file(file)?;
            }
            // fs::remove_file(&thread_path_out).unwrap();
        }
        rdb_output_zipwriter.finish().unwrap();

or using the zipmerge command line tool works. The individual archives are also extractable.