For $mbXen, when my friend added new CoinTool mints on Chrome web browser, the calendar dates updated correctly but the total coin count of $mbXen at top left did not.
When he then took a XenMon Backup file of the $mbXen and did a XenMon Restore into Firefox web browser, then the $mbXen total coin count appeared correctly at top left.
Seems like there might be an issue with updating that total coin count number at top left, at least for $mbXen on Chrome web browser.