I have been developing a custom master-page based off of SharePoint 2013 html to master page converter. The SharePoint site will be used as a simple document portal for customers.
My problem comes when a user tries to upload a document, the document upload page inherits the custom master-page but does not display properly in the iframe popup. I am happy with the default upload page and if possible would like to use it.How can I achieve this.
This is how the document upload iframe looks currently
Thanks in advance for any help