diff --git a/src/core/containers/OperationContainer.jsx b/src/core/containers/OperationContainer.jsx
index 89ce7f51ae1..2a5cb4f5487 100644
--- a/src/core/containers/OperationContainer.jsx
+++ b/src/core/containers/OperationContainer.jsx
@@ -124,7 +124,7 @@ export default class OperationContainer extends PureComponent {
 
   onResetClick = (pathMethod) => {
     const defaultRequestBodyValue = this.props.oas3Selectors.selectDefaultRequestBodyValue(...pathMethod)
-    this.props.oas3Actions.setRequestBodyValue({ value: defaultRequestBodyValue, pathMethod })
+    this.props.oas3Actions.setRequestBodyValue({ value: fromJS(JSON.parse(defaultRequestBodyValue)), pathMethod })
   }
 
   onExecute = () => {
diff --git a/src/core/plugins/json-schema-5-samples/fn/index.js b/src/core/plugins/json-schema-5-samples/fn/index.js
index 6434c50666b..14c1da6ca55 100644
--- a/src/core/plugins/json-schema-5-samples/fn/index.js
+++ b/src/core/plugins/json-schema-5-samples/fn/index.js
@@ -283,7 +283,7 @@ export const sampleFromSchemaGeneric = (schema, config={}, exampleOverride = und
   }
 
   const canAddProperty = (propName) => {
-    if(!schema || schema.maxProperties === null || schema.maxProperties === undefined) {
+    if(!respectXML || !schema || schema.maxProperties === null || schema.maxProperties === undefined) {
       return true
     }
     if(hasExceededMaxProperties()) {
diff --git a/src/core/plugins/oas3/reducers.js b/src/core/plugins/oas3/reducers.js
index 9efdb267726..2e3060f1bee 100644
--- a/src/core/plugins/oas3/reducers.js
+++ b/src/core/plugins/oas3/reducers.js
@@ -29,15 +29,18 @@ export default {
       // context: user switch from application/json to application/x-www-form-urlencoded
       currentVal = Map()
     }
-    let newVal
+    let newVal = currentVal
     const [...valueKeys] = value.keys()
     valueKeys.forEach((valueKey) => {
       let valueKeyVal = value.getIn([valueKey])
-      if (!currentVal.has(valueKey)) {
-        newVal = currentVal.setIn([valueKey, "value"], valueKeyVal)
+      if (!newVal.has(valueKey)) {
+      newVal = newVal.setIn([valueKey, "value"], valueKeyVal)
       } else if (!Map.isMap(valueKeyVal)) {
         // context: user input will be received as String
-        newVal = currentVal.setIn([valueKey, "value"], valueKeyVal)
+        newVal = newVal.setIn([valueKey, "value"], valueKeyVal)
+      } else {
+        // context: If multiple values are edited only last edited is string, previous are map.
+        newVal = newVal.set(valueKey, valueKeyVal)
       }
     })
     return state.setIn(["requestData", path, method, "bodyValue"], newVal)
diff --git a/test/e2e-cypress/e2e/bugs/9158.cy.js b/test/e2e-cypress/e2e/bugs/9158.cy.js
new file mode 100644
index 00000000000..93eab66585e
--- /dev/null
+++ b/test/e2e-cypress/e2e/bugs/9158.cy.js
@@ -0,0 +1,29 @@
+describe("#9158: Reset button creates invalid inputs in the Try It Out form", () => {
+    it("it reset the user edited value and executes with the default value in case of try out reset. (#6517)", () => {
+      cy
+        .visit("?url=/documents/bugs/9158.yaml")
+        .get("#operations-default-post_users")
+        .click()
+        // Expand Try It Out
+        .get(".try-out__btn")
+        .click()
+        // replace multiple default values with bad value
+        .get(`.parameters[data-property-name="name"] input[type=text]`)
+        .type("{selectall}not the default name value")
+        .get(`.parameters[data-property-name="badgeid"] input[type=text]`)
+        .type("{selectall}not the default badge value")
+        // Reset Try It Out
+        .get(".try-out__btn.reset")
+        .click()
+        // Submit using default value
+        .get(".btn.execute")
+        .click()
+        // No required validation error on body parameter
+        .get(`.parameters[data-property-name="name"] input`)
+        .should("have.value", "default name")
+        .and("not.have.class", "invalid")
+        .get(`.parameters[data-property-name="badgeid"] input`)
+        .should("have.value", "12345")
+        .and("not.have.class", "invalid")
+    })
+  })
\ No newline at end of file
diff --git a/test/e2e-cypress/static/documents/bugs/9158.yaml b/test/e2e-cypress/static/documents/bugs/9158.yaml
new file mode 100644
index 00000000000..ec888fe3d48
--- /dev/null
+++ b/test/e2e-cypress/static/documents/bugs/9158.yaml
@@ -0,0 +1,46 @@
+openapi: 3.0.3
+info:
+  title: Test API
+  version: 1.0.0
+paths:
+  /users:
+    post:
+      summary: Create a user
+      description: Create a user, one of various ways
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              $ref: '#/components/schemas/UserSource'
+      responses:
+        '204':
+          description: Successfully opened document
+        '400':
+          description: Invalid request
+          content:
+            application/json:
+              schema:
+                properties:
+                  output:
+                    type: string
+                    example: "Invalid request"
+components:
+  schemas:
+    UserSource:
+      type: object
+      properties:
+        name:
+          description: Full name
+          type: string
+          example: "default name"
+        badgeid:
+          description: Badge number
+          type: integer
+          format: uint32
+          example: 12345
+        email:
+          description: E-mail
+          type: string
+          example: "jsmith@business.com"
+      minProperties: 1
+      maxProperties: 3
\ No newline at end of file