Hi, I see someone logged a similar query 3 years ago regarding the same topic:

Has there been any progress regarding the development?

When I set the "Mapping Timeline Filter" to "NONE" I would expect it to not effect the state of the widget or graph. Some charts / widgets in my dashboard have a fixed timeframe, but are still dependant on other dashboard filters like groups etc. For example, I have widgets that show data based on the timeline selection, but other widgets that show year-to-date data that is not supposed to be affected by the timeline filter.