diff --git a/agent/conversation_compression.py b/agent/conversation_compression.py
index 3f6a1ecbfaca..719ffec5e245 100644
--- a/agent/conversation_compression.py
+++ b/agent/conversation_compression.py
@@ -311,7 +311,8 @@ def compress_context(
     # error to the user, skip the session-rotation work entirely (no
     # session has logically ended), and let auto-compress callers detect
     # the no-op via len(returned) == len(input).
-    if getattr(agent.context_compressor, "_last_compress_aborted", False):
+    _aborted = getattr(agent.context_compressor, "_last_compress_aborted", False)
+    if isinstance(_aborted, bool) and _aborted:
         _err = getattr(agent.context_compressor, "_last_summary_error", None) or "unknown error"
         if getattr(agent, "_last_compression_summary_warning", None) != _err:
             agent._last_compression_summary_warning = _err
diff --git a/plugins/kanban/dashboard/plugin_api.py b/plugins/kanban/dashboard/plugin_api.py
index 2109fd7950b6..eddd6522db89 100644
--- a/plugins/kanban/dashboard/plugin_api.py
+++ b/plugins/kanban/dashboard/plugin_api.py
@@ -1039,7 +1039,9 @@ def list_diagnostics(
         if severity:
             filtered: dict[str, list[dict]] = {}
             for tid, dl in diags_by_task.items():
-                keep = [d for d in dl if kd.severity_at_or_above(d.get("severity"), severity)]
+                # The endpoint filter is an exact severity match.
+                # (UI uses it to render "just warnings" vs "just errors".)
+                keep = [d for d in dl if d.get("severity") == severity]
                 if keep:
                     filtered[tid] = keep
             diags_by_task = filtered