I'm having the same issue with a hosted feature layer in AGOL. The layer settings allow for edits and also tried with the refresh interval turned on in the web map with no luck. The layer has no scale dependency. The symbology used is the "Counts and Amounts (Size)". When the layer is updated with new values that exceed the range of the original values, the new value out of the original range is not drawn. Have to open the web map and manually update the symbology every time for it to register the new range of values.
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