Chart Filters (Online vs. Desktop) Issue
Our users regularly create reports in Excel Desktop whey they create multiple charts from the same data source and use the chart filters to show specific data in each chart. Unfortunately, because Excel Online doesn't appear to support chart filters, if one of these documents is viewed in Excel Online, the first view will load correctly by showing the charts with the appropriately filtered data, but due to the nature of Excel Online, even if they make no changes, it effectively "saves/updates" the file, and any subsequent views of the file, either in Online or Desktop, results in all chart filters being reset. We've change default open behavior to try to avoid users viewing these files in Online, but it occasionally happens still and is just a frustrating experience to have work undone or requiring massive workarounds to avoid.
It would be nice if chart filtering was appropriately supported in Online or at least not alter behavior just from viewing a file.