Object key overridden

[amerov]

How to reproduce:
Go to cursor object key than named as a url, error, title , href, target, ...
Go to command mode :echo map(synstack(line('.'), col('.')), 'synIDattr(v:val, "name")')
result: javaScriptHtmlElemProperties or javascriptDomElemAttrs, or javaScriptFetchAPIProperties ...