A post by Blizzard to the Diablo III forums informs those who are missing items and gold since the action/RPG sequel was patched should get everything back over the weekend, even if they did not notice or report the losses. In a separate post they also identify a different issue that's delaying the delivery of the Wings of Valor perk for those who have preordered the Reaper of Souls expansion, saying those who ordered yesterday afternoon may experience a delay in delivery, while preorders since then are getting their bonuses immediately. Here's word on the return of the missing items:

Thanks to your reports and D3debug.tx files, we've been able to identify a very isolated number of players who did experience gold loss as a result of the missing gold/equipment/stash tab bug. We've developed a fix for this issue and are working to test and implement it by the end of the weekend. This fix should restore the full amount of gold lost as a result of the bug without any work required by the affected players. (Note that you need not have reported the issue in this thread to be eligible for the fix.)

We sincerely apologize for any trouble this bug caused. The missing gold/equipment/stash tab should now be resolved and we hope to address any lingering issues associated with it before the launch of Reaper of Souls. :)