Hi Sander,
When using gwtlib pagingtable inside a tabdialog. the data is not displayed in the table but to displaying record count is shown. if we resize the window the table get refreshed displays the data.
you added an comment as //Skip all this if it is used inside a TabPanel
inside table class in function initOptimalSize()
i called this function too, the problem not got solved. will be more helpful if you could give a solution.
Note: am populating both content of tab at a same time. using rpc call.