Caching Needed for Windows where text is being entered

[balletbooster]

When a user creates a post and presses the Submit button and then for whatever reason the software receives an error, the entire post is lost. There is no way for the user to retrieve the post to resubmit it. Refreshing the screen takes you back to a blank Post Reply window, as does using the Back button.

Same is true when a user creates a PM and the receiver's Inbox is full. The PM is lost and the user has no way to retrieve it to store until the receiver has cleaned their mailbox.

Windows need to be cached so that you can use the Back button to get back to the window, exactly as it was displayed immediately before the error.