Creates a similar shouldUpdate funciton fast field internally uses an…

…d calls the external shouldUpdate along with it to prevent the component not re-rendering in a few scenarios.

src/components/Editor/FormikEditor.jsx

@@ -16,23 +16,47 @@ const FormikEditor = (
     ...otherProps
   },
   ref
-) => (
-  <FastField {...{ attachments, mentions, name, shouldUpdate, variables }}>
-    {({ field, form, meta }) => (
-      <Editor
-        {...{ attachments, mentions, name, ref, variables }}
-        error={meta.touched ? meta.error : ""}
-        initialValue={field.value}
-        onBlur={() => form.setFieldTouched(name, true)}
-        onChange={value => {
-          form.setFieldValue(name, value);
-          onChange?.(value);
-        }}
-        {...otherProps}
-      />
-    )}
-  </FastField>
-);
+) => {
+  // Similar to the `shouldComponentUpdate` logic of FastField component.
+  // https://github.com/jaredpalmer/formik/blob/main/packages/formik/src/FastField.tsx#L75-L93
+  // Additionally calls the shouldUpdate function passed from the host application and compares to
+  // the rest of the values.
+  const internalShouldUpdate = (prevProps, nextProps) => {
+    const prevFormikProps = prevProps.formik;
+    const nextFormikProps = nextProps.formik;
+
+    return (
+      prevFormikProps.errors[name] !== nextFormikProps.errors[name] ||
+      prevFormikProps.touched[name] !== nextFormikProps.touched[name] ||
+      Object.keys(nextProps).length !== Object.keys(prevProps).length ||
+      prevFormikProps.isSubmitting !== nextFormikProps.isSubmitting ||
+      Boolean(shouldUpdate?.(prevProps, nextProps))
+    );
+  };
+
+  return (
+    <FastField
+      {...{ attachments, mentions, name, variables }}
+      shouldUpdate={internalShouldUpdate}
+    >
+      {({ field, form, meta }) => (
+        <Editor
+          {...{ attachments, mentions, name, ref, variables }}
+          error={meta.touched ? meta.error : ""}
+          initialValue={field.value}
+          onBlur={() => {
+            form.setFieldTouched(name, true);
+          }}
+          onChange={value => {
+            form.setFieldValue(name, value);
+            onChange?.(value);
+          }}
+          {...otherProps}
+        />
+      )}
+    </FastField>
+  );
+};
 
 FormikEditor.displayName = "FormikNeetoEditor";