When filling RichText Field:
Request:
{
	"csrfToken":"138fa530-faa0-4f3c-892a-7b925aeefae6",
	"rpc":
		[
			["493","v","v",
				["text",
					["s","<p>Hola</p>\n"]
				]
			]
		],
	"syncId":218
}

Response:

for(;;);
[
	{
		"syncId": 219, 
		"changes" : 
			[
				[
					"change",
						{"pid":"493"},
					["65",
						{
							"id":"493",
							"readonly":false,
							"viewWithoutEditor":false,
							"inPageConfig":"
								{ 
									filebrowserImageBrowseUrl : 'dummy', 
									filebrowserImageBrowseLinkUrl : 'dummy', 
									customConfig : '\/magnoliaEEpro545-webappconfig-default.js' 
								}",
							"protected_body":false,
							"serverplugins":
								{
									"magnoliaFileBrowser":"\/magnoliaEEpro545-webapp\/VAADIN\/js\/filebrowser\/",
									"magnolialink":"\/magnoliaEEpro545-webapp\/VAADIN\/js\/magnolialink\/"},
									"eventnames":["mgnlGetLink","chooseAsset"],
									"v":
										{"text":"<p>Hola<\/p>\n"}
								}
						]
				]
			], 
			"state":
				{
					"493":
						{
							"hideErrors":false,
							"errorMessage":null
						}
				}, 
			"types":{"451":"35","477":"56","493":"65"}, 
			"hierarchy":{"451":["452"],"477":["478"],"493":[]}, 
			"rpc" : [], 
			"meta" : {}, 
			"resources" : {}, 
			"timings":[291366, 0]
		}
	]


When filling Text Field and after that focus is lost and RichText Field disappears:
Request:

{
	"csrfToken":"138fa530-faa0-4f3c-892a-7b925aeefae6",
	"rpc":
		[
			["492","v","v",
				["text",
					["s","Hola"]
				]
			],
			["492","v","v",
				["c",["i","4"]]
			]
		],
	"syncId":219
}


Response:

for(;;);
[
	{
		"syncId": 220, 
		"changes" : 
			[
				[
					"change",{"pid":"492"},
					["30",{"id":"492"}]
				]
			], 
		"state":
			{"492":	
				{
					"text":"Hola",
					"hideErrors":false,
					"errorMessage":null
				}
			}, 
		"types":{"451":"35","477":"56","492":"30"}, 
		"hierarchy":{"451":["452"],"477":["478"],"492":[]}, 
		"rpc" : [], 
		"meta" : {}, 
		"resources" : {}, 
		"timings":[291366, 0]
	}
]