Hey all, hope things are well. I've been working on a widget to allow for editing tables in the Web App Builder via the Attribute Table widget, and I've got a promising prototype working in the repo below. I hope to continue improving this tool in the future, but it's a good start so far. Testing on versions above 2.5 would be appreciated.
Note that this widget requires the use of the LocalLayer widget to add Table sublayers in FeatureServices to your map as Feature Layers. More information about this widget below.
Look forward to your feedback!