Why doesn't Chrome on iOS download a zip archive?

Question

PHP

Hello. There is the following problem.
When clicking on the link, the user should be given an archive with files. In all browsers everything works fine,
except for Chrome on iOS (iPad Mini) - the error 'Download failed, and Dolphin - 'Cannot determine file size' falls out
Although all the headers seem to be set correctly -

header('Pragma: public');
                        header('Expires: 0');
                        header('Cache-Control: no-cache');
                                          
                        header('Content-Description: Download');      
                                                
                        header('Content-Type: application/zip');
                        header('Content-Disposition: attachment; filename="crazypatterns_' . $product->id . '.zip"');
                        header('Content-Transfer-Encoding: binary');
                        header('Content-Length: '.filesize($filePath));

                        readfile($filePath);

I also tried changing the Content-Type to 'octet-stream' - to no avail.
The first few pages of Google were shoveled and various options were tried, but to no avail.
Has anyone come across this before and can suggest a possible solution?
UPD: Example