JSON payload returned by Rasa for "action_show_carousel" keeps adding event substrings

[ryanmark1867]

Seeing a growing number of

this section on home.html (in showCarouselExecAction() function):
var js_payload_str = JSON.stringify(js_json.tracker.events[4].data.custom);

seeing increasing number of event subsections

"events": [
{
"event": "action",
"timestamp": 1582759122.3822265,
"name": "action_session_start",
"policy": null,
"confidence": null
},
{
"event": "session_started",
"timestamp": 1582759122.3822265
},
{
"event": "action",
"timestamp": 1582759122.3822265,
"name": "action_listen",
"policy": null,
"confidence": null
},
{
"event": "slot",
"timestamp": 1582759122.3822265,
"name": "cast_name",
"value": [
"harrison ford"
]
},
{
"event": "action",
"timestamp": 1582759130.7322364,
"name": "action_show_carousel",
"policy": null,
"confidence": null
},
{
"event": "bot",
"timestamp": 1582759130.7322364,
"text": null,
"data": {