Fix attachment display and tweak actor lookup

utils/template_filters.py

@@ -273,9 +273,6 @@ _FILE_URL_CACHE = LRUCache(4096)
 
 
 def _get_file_url(url, size, kind) -> str:
-    if url.startswith(BASE_URL):
-        return url
-
     k = (url, size, kind)
     cached = _FILE_URL_CACHE.get(k)
     if cached:
@@ -288,6 +285,9 @@ def _get_file_url(url, size, kind) -> str:
         return out
 
     _logger.error(f"cache not available for {url}/{size}/{kind}")
+    if url.startswith(BASE_URL):
+        return url
+
     p = urlparse(url)
     return f"/p/{p.scheme}" + p._replace(scheme="").geturl()[1:]