diff --git a/layouts/partials/events/render-event.html b/layouts/partials/events/render-event.html
index f0c50c95..14edbf44 100644
--- a/layouts/partials/events/render-event.html
+++ b/layouts/partials/events/render-event.html
@@ -56,7 +56,11 @@
 <h2>Content</h2>
 
 {{ $anchor_base := anchorize $event_name }}
-{{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $event_data.properties.content "anchor_base" $anchor_base) }}
+{{ $additional_types := partial "json-schema/resolve-additional-types" (dict
+    "schema" $event_data.properties.content
+    "anchor_base" $anchor_base
+    "is_root" true
+) }}
 {{ $additional_types = uniq $additional_types }}
 
 {{ range $additional_types }}
diff --git a/layouts/partials/json-schema/resolve-additional-types.html b/layouts/partials/json-schema/resolve-additional-types.html
index 8bf210ea..67b9aa42 100644
--- a/layouts/partials/json-schema/resolve-additional-types.html
+++ b/layouts/partials/json-schema/resolve-additional-types.html
@@ -2,6 +2,7 @@
 
   Finds and returns all nested objects, given a dict containing:
    * `schema`: a JSON schema object
+   * `is_root`: Whether this is the root of the schema, meaning we should not clean the object so we can show additional and pattern properties.
    * `anchor_base`: a prefix to add to the HTML anchors generated for each object. If nil, no anchors are generated.
    * `name`: optionally, a name to use for this object in error/warning messages. If left unset,
       the object's `title` property is used (if present).
@@ -11,7 +12,7 @@
   Assumes that "resolve-refs" and "resolve-allof" has already been called on the
   input schema.
 
-  Returns an array of all the objects found. For each object, the following properties are returned:
+  Returns an array of all the objects found. If `is_root` is true, the first object keeps all its properties. For all other objects, the following properties are returned:
     * title
     * properties
     * required
@@ -23,6 +24,7 @@
 */}}
 
 {{ $this_object := .schema }}
+{{ $is_root := .is_root }}
 {{ $anchor_base := .anchor_base }}
 {{ $additional_objects := slice }}
 {{ $name := .name | default $this_object.title | default "<untitled object>" }}
@@ -36,7 +38,11 @@
     {{/*
       Add the object we were passed into the $additional_objects array
     */}}
-    {{ $additional_objects = $additional_objects | append (partial "clean-object" $this_object) }}
+    {{ $this_additional_object := $this_object }}
+    {{ if not $is_root }}
+      {{ $this_additional_object = partial "clean-object" $this_object }}
+    {{ end }}
+    {{ $additional_objects = $additional_objects | append $this_additional_object }}
 
     {{/*
       Add any nested objects referenced in this object's `additionalProperties`
diff --git a/layouts/partials/openapi/render-object-table.html b/layouts/partials/openapi/render-object-table.html
index d76f1a74..a99ce6b8 100644
--- a/layouts/partials/openapi/render-object-table.html
+++ b/layouts/partials/openapi/render-object-table.html
@@ -44,19 +44,31 @@
  <tr>
   <td><code>{{ $property_name }}</code></td>
   <td><code>{{ partial "partials/property-type" $property }}</code></td>
-  <td>
-    {{ if $required }}<strong>Required: </strong>{{end -}}
-    {{ $property.description | markdownify -}}
-    {{ if $property.enum }}<p>One of: <code>[{{ delimit $property.enum ", " }}]</code>.</p>{{ end -}}
-    {{ if (index $property "x-addedInMatrixVersion") }}{{ partial "added-in" (dict "v" (index $property "x-addedInMatrixVersion")) }}{{ end -}}
-    {{ if (index $property "x-changedInMatrixVersion") }}{{ partial "changed-in" (dict "changes_dict" (index $property "x-changedInMatrixVersion")) }}{{ end -}}
-  </td>
+  <td>{{ partial "partials/property-description" (dict "property" $property "required" $required) }}</td>
  </tr>
 
     {{ end }}
 
 </table>
 
+{{ else if (or .additionalProperties .patternProperties) }}
+<table{{ if .anchor }} id="{{ .anchor }}"{{ end }} class="object-table">
+ {{ with $title }}
+ <caption>{{ . }}</caption>
+ {{ end }}
+ <thead>
+  <th class="col-type">Type</th>
+  <th class="col-description">Description</th>
+ </thead>
+
+    {{ $property := partial "json-schema/resolve-allof" . }}
+
+ <tr>
+  <td><code>{{ partial "partials/property-type" $property }}</code></td>
+  <td>{{ partial "partials/property-description" (dict "property" $property) }}</td>
+ </tr>
+</table>
+
 {{ end }}
 
 {{/*
@@ -148,3 +160,14 @@
     {{ end }}
     {{ return $type }}
 {{ end }}
+
+{{/*
+    Computes the description to display for a property.
+*/}}
+{{ define "partials/property-description" }}
+    {{ if .required }}<strong>Required: </strong>{{end -}}
+    {{ .property.description | markdownify -}}
+    {{ if .property.enum }}<p>One of: <code>[{{ delimit .property.enum ", " }}]</code>.</p>{{ end -}}
+    {{ if (index .property "x-addedInMatrixVersion") }}{{ partial "added-in" (dict "v" (index .property "x-addedInMatrixVersion")) }}{{ end -}}
+    {{ if (index .property "x-changedInMatrixVersion") }}{{ partial "changed-in" (dict "changes_dict" (index .property "x-changedInMatrixVersion")) }}{{ end -}}
+{{ end }}
\ No newline at end of file
diff --git a/layouts/partials/openapi/render-request.html b/layouts/partials/openapi/render-request.html
index ce31943c..d9fcf8c0 100644
--- a/layouts/partials/openapi/render-request.html
+++ b/layouts/partials/openapi/render-request.html
@@ -45,7 +45,7 @@
             {{ $schema := partial "json-schema/resolve-refs" (dict "schema" $json_body.schema "path" $path) }}
             {{ $schema := partial "json-schema/resolve-allof" $schema }}
 
-            {{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $schema "anchor_base" $anchor_base) }}
+            {{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $schema "anchor_base" $anchor_base "is_root" true) }}
             {{ $additional_types = uniq $additional_types }}
             {{ range $additional_types }}
                 {{ partial "openapi/render-object-table" . }}
diff --git a/layouts/partials/openapi/render-responses.html b/layouts/partials/openapi/render-responses.html
index 37538b6e..b78efd20 100644
--- a/layouts/partials/openapi/render-responses.html
+++ b/layouts/partials/openapi/render-responses.html
@@ -80,7 +80,7 @@
             response. (This will be a no-op for response types which aren't
             objects or arrays.)
             */}}
-            {{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $schema "anchor_base" $anchor_base) }}
+            {{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $schema "anchor_base" $anchor_base "is_root" true) }}
             {{ $additional_types = uniq $additional_types }}
             {{ range $additional_types }}
                 {{ partial "openapi/render-object-table" . }}
diff --git a/layouts/shortcodes/definition.html b/layouts/shortcodes/definition.html
index 67cd63c0..77ea2d5c 100644
--- a/layouts/shortcodes/definition.html
+++ b/layouts/shortcodes/definition.html
@@ -50,7 +50,7 @@
 {{ $definition.description | markdownify }}
 
 
-{{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $definition "name" (printf "\"%s\"" $path)) }}
+{{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $definition "name" (printf "\"%s\"" $path)) "is_root" true }}
 {{ $additional_types = uniq $additional_types }}
 
 {{ range $additional_types }}
diff --git a/layouts/shortcodes/event-fields.html b/layouts/shortcodes/event-fields.html
index 91e2faf2..d45ead0d 100644
--- a/layouts/shortcodes/event-fields.html
+++ b/layouts/shortcodes/event-fields.html
@@ -35,7 +35,7 @@
 
 {{ $event = merge $event (dict "title" "") }}
 
-{{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $event) }}
+{{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $event) "is_root" true }}
 {{ range $additional_types }}
     {{ partial "openapi/render-object-table" . }}
 {{end}}