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Prateek ChaturvediPrateek Chaturvedi 

Custom page in standrad Detail page

User-added image

I createf one custom page having standard cotroller Account .
I added this page on Account layout 
 when i open Account datial i am getting home page in that section

User-added image 

If i refresh the custom page one time after that i am not getting this issue
Note: I am facing this problem in sandbox only whose url is like this https://123cmpl--123val.cs15.my.salesforce.com/066e00000009iUI
 
PratikPratik (Salesforce Developers) 
Hi Prateek,

This issue seems to be with <iframe> tag you are using. Try writing you text outside the ifram tag and it will be appear on pagelayout. 

Thanks,
Pratik