IFrame Visualforce Issues

We have brought in an iframe of a visualforce page into one of our Detail pages, but some features of it aren’t working. We can’t click Edit on the Sales Order lines or click the link to the product. We also can’t add new activities (not pictured).

We have had to add a workaround button to take you to the original VF page if you want to access these.

Here is the HTML code we are using.



Maybe add a remote site setting to your Salesforce instance?  It might be Salesforce is disabling some of the features for security purposes.