if ($lazyload) {
$item->imagetag = '<img alt="'.$item->title.'" class="lazyload" src="'.JURI::root(true).'/media/syw_latestnewsenhanced/loaders/ajax-loader.gif" data-src="'.$filename.'" data-srcset="'.$filename.' 1x, '.str_replace('.', '@2x.', $filename).' 2x"'.$extra_attribute.$extra_styling.' />';
} else {
$item->imagetag = '<img alt="'.$item->title.'" class="lazyload" data-src="'.$filename.'" data-srcset="'.$filename.' 1x, '.str_replace('.', '@2x.', $filename).' 2x"'.$extra_attribute.$extra_styling.' />';
}

Class 'lazyload' adds in both cases =)

syw wrote: Great catch! Thank you very much for the report.
Until I release a fix, you can switch the URL path to
/media/syw/images/ajax-loader.gif

I think that 'data/image:....' is better: less requests to server.