When publishing a module on a dashboard you can specify an Initial Page, an item from Page Selector that will be selected once you reopen a dashboard. For reporting dashboards, I normally put it on Total level (Total Zones).
If Selective access is enabled for the Zone list, and a user has access to a specific Zone, the Initial Page set on Total Zones will not work. Instead, the first Plant (considering hierarchy Zone -> Country -> Plant) will be shown. Using the new "Use Top Level As Default Page" functionality does not show this issue.
Please ensure that if "Use Top Level As Default Page" is ticked, the top level will be selected also with Selective Access settings enabled, or if Initial Page is set to Total level, it would cascade to highest available aggregation when Selective Access settings enabled.