Symbols in Legend change size after scrolling - Xamarin Forms iOS

[Felicity-R]

I've added a Legend from the Toolkit to a Xamarin Forms project, and ran into this issue on iOS. I have also tested Android and Windows and have not seen this there.

If you have enough layers in the map that the legend will need to scroll, then for legend entries that are initially out of view, or that you scroll out of view and then back into view, the size of the symbol will shrink. I can reproduce this issue in the samples after adding more layers to the map, as well as in a production app.

Screenshots

Sample app with added layers; I loaded the Legend sample, turned off "Filter by scale range" to get all the layers to show up, and the symbols are initially the right size, as seen here:

After scrolling the list up and down the symbols for the JeffTest_Hazard layer have shrunk, note that some entries have shrunk more than others:

Screenshots are from an iPad Air (3rd gen) iOS 13.3 simulator. I also see this issue on a real device, an iPad Air (6th gen) with iOS 12.2.

The "test hazards" layer in the screenshots can be found at https://services.arcgis.com/p3UBboyC0NH1uCie/arcgis/rest/services/Jeff_Test_Hazards/FeatureServer/0 (although that's not the only layer this affects, it's just a good demo).