Running on the WAB built into Portal 10.6 (think that is WAB 2.6) and have a Local Scene added to an app. Used the GUI to create the app and add the widgets. Built out most the custom widget but have a few issues, one of which is with the Layer List not updating properly.
So the custom widget is just adding in some new FeatureLayers and setting their definitionExpressions (example below). The Layer List seems to refresh fine for all the layers except for the last. I have tried a variable number of layers added and it is always only the last one. The last layer shows as "Untitled layer" in the list and the visibility toggle doesn't even work. The data from the layer shows up though. Any ideas?