SharePoint Calendar List item doesn't get properly created via Logic App???

If i

• create the event using SPO gui the event get properly created and surfaces in the events webpart
• BUT when i create it via an azure logic app i gets created but it doesn't surface in the events webpart.
• I need to click edit and then save to make it surface. ???

i'm getting clueless... I've created the item using the action create item and the http rest post action in logic apps.

Have anyone experienced something similar?