Hello @rajive_rana,
Can you please set Magento rwd and base theme and check product view page? Also, Give me a screenshot.
--
If my answer is useful, please Accept as Solution & give Kudos
Hello @rajive_rana
I also faced same issue with using an external plugin. According to me may be indexing is running in background at admin or otherwise some third party plugin is making issue. Can you please check once and let me know.
If Issue Solved, Click Kudos/Accept As solutions.