fix: resolved model data invalidation (via #4858)

test/e2e-cypress/static/documents/bugs/editor-1868.yaml

@@ -0,0 +1,13 @@
+swagger: "2.0"
+
+paths:
+  /:
+    get:
+      description: wow
+
+definitions:
+  MyModel:
+    type: object
+    properties:
+      a: 
+        type: string

test/e2e-cypress/tests/bugs/editor-1868.js

@@ -0,0 +1,26 @@
+import repeat from "lodash/repeat"
+
+describe("Editor #1868: model changes break rendering", () => {
+  it("should render model content changes correctly", () => {
+    cy
+      .visit("/?url=/documents/bugs/editor-1868.yaml")
+
+      .get(".model-toggle.collapsed")
+      .click()
+
+      .get("#model-MyModel")
+      .contains("a")
+
+      .window()
+      .then(win => {
+        // Simulate Swagger Editor updating a model
+        const content = win.ui.specSelectors.specStr()
+        win.ui.specActions.updateSpec(content + `\n      b:\n        type: string`)
+      })
+
+      .get("#model-MyModel")
+      .contains("a")
+      .get("#model-MyModel")
+      .contains("b")
+  })
+})