The Fillet Tool in ArcPro has different results than that of ArcMap. In ArcMap, the tool's result is a new polyline. In ArcPro, the tool's result is an extension of one of the two polylines that was used to create the curve. Please change the tool so that the results are a new polyline like that of ArcMap. This will make it easier to reproduce workflows that have been working for years and years. Another option would be to create an option in the 'options' dialog to have the results of the Fillet tool be a new polyline rather than extending an existing polyline. Thank you.