I would love to assist with the unexpected behavior. What version of Tableau Server are you using?
I would try to resize the cells when the view is expanded on the large screen if possible as a troubleshooting step : Resize Tables and Cells - Tableau
Also, would you be able to share a package workbook that I could try to test on my own Tableau Server. Packaged workbooks and flows: when, why, how
Hope this helps!