Hi Robert Scheitlin, GISP,
For WAB (Developer Edition) 2.17, I modified the standard 3D "LayerList" widget,
ading a button to display attribute table of layer by opening a custom widget which uses the code from
FeatureTable widget with popup interaction
to display the attribute table within that widget which serves as a "popup".
For some layers it displays the attribute table OK,
but for some other layers it displays only the first line with the field names,
but the whole table is not displayed, so the features data is missing.
Note: the regular popup, activated by clicking the features on the sceneView, works OK,