When I look at the screenshots, it looks like the dashboard is publishing to the server correctly. It appears to be more of a rendering issue. (There is a grayed out area where the bottom worksheet should be and it looks like the smaller preview has the worksheet.)
Are your desktop and server versions the same? (or at least the same major version, i.e. 8.3 and 8.3 or 9.0 and 9.0)
What type of data source is your bottom worksheet? Is it the same as another worksheet? Is it live or an extract?
The bottom section is grey, and I see scroll bars. That tells me that object is still rendering. If you scroll it down, is the spinner showing? If so, it is just waiting time.
Also, I have seen times when the Preview window is not exactly how it shows in Tableau Server. Have you looked at it there?
I think it's because my tableau license had ran out so we were on a temporary license so the full features don't work. Thank-you