Normal url and ?amp url both ranked and searched

@zotezo While both are indexed search engines and other supported platforms determine the version of your site served to visitors. Both versions are not returned in search results.

An example is if your site is discovered from a mobile device search then it’s possible that your AMP version will be returned.

Is it good from google indexing perspective?
Any way out to resolve the issue?

Is it normal behaviour?

@zotezo Yes, this is intended behaviour in transitional and reader mode, serving the most suitable version based on different factors. You can switch to standard mode AMP for a full AMP experience.