The "Maximum number of series (50) exceeded" warning, reword it, make it sticky, and document it.

Upon receiving the warning "Maximum number of series (50) exceeded", the warning does not reappear with a widget, dashboard, or page refresh. Instead, a filter change is required in order to trigger it again. IMO the warning should persist with refreshes and be visible every time due to the impact of the limitation being exceed - data is literally missing from the widget and the widget does not reflect the data set expected by the user. 

To that end of being clear about the impact of having more series than the limitation allows, the warning would be best reworded to indicate that impact and avoid users making decisions on an uncontrolled subset of data. For example, "Results limited to maximum number of series (50)..." or "Data limited..."

This limitation should also be documented in Sisense documentation, but is not currently.