2878342 - Height issue on converting application to widget and deploying in SCP

You have converted Fiori application to a portal service component in Web IDE and then deployed to SCP.
You then added this content as a widget to a Success Factors page. The content displays intermittently (flashes) on the page and user must keep refreshing to see it.
On refresh, the height of page area is for example, 600px by default, but the widget is 0px.

The issue is only happening with this custom widget.

The following errors were found in the console :

core-min-1.js:65 Assertion failed: The service context requires a scope type!
a @ VM1692 core-min-1.js:65
core-min-1.js:64 2019-04-25 14:15:54.742030 data type 'sap.ui.layout.GridSpan' could not be found. -
c @ VM1692 core-min-1.js:64
core-min-1.js:64 2019-04-25 14:15:54.744500 data type 'sap.ui.layout.GridSpan' could not be found. -
c @ VM1692 core-min-1.js:64
core-min-1.js:64 2019-04-25 14:15:54.748949 data type 'sap.ui.layout.GridSpan' could not be found. -
c @ VM1692 core-min-1.js:64
2library-preload.js?eval:499 Failed to load resource: the server responded with a status of 404 ()

SAP Web IDE on SAP Cloud Platform

extension, webide, plug-in, plug in, widget, apps, app, application, height, webide, sap.ui.layout.GridSpan, Failed to load resource, cloud Portal, CPP, Portal Platform , KBA , EP-CPP-NEO-EXT , Extension solution , CA-WDE-BLD , SAP Web IDE Build application , Problem