When the report is loaded in Silverlight (Image above), the event is correctly displayed in the interface. However, when loaded in an HTML5 project, the the BeginRender event field is empty.
All other variables are correctly loaded, except for events.
After further debugging, I noticed that the "designer.report.beginRenderEvent" object was empty after manually setting the BeginRenderEvent field directly through the interface. And vice-versa, also tried to set the "designer.report.beginRenderEvent.script" programmatically and the field remained empty in the interface.
Version being used:
Version: 2018.2.3
Build date: 2018.07.05