lib/pleroma/reverse_proxy.ex

@@ -114,6 +114,7 @@ def call(conn = %{method: method}, url, opts) when method in @methods do
     else
       {:ok, true} ->
         conn
+        |> put_private(:proxied_url, url)
         |> error_or_redirect(500, "Request failed", opts)
         |> halt()
 

lib/pleroma/search/elasticsearch/activity_parser.ex

@@ -37,6 +37,13 @@ defp to_es({:filter, [field, query]}) do
   end
 
   def parse(q) do
-    Enum.map(q, &to_es/1)
+    [
+      %{
+        exists: %{
+          field: "content"
+        }
+      }
+    ] ++
+      Enum.map(q, &to_es/1)
   end
 end