From f88498ce2253f9f58e903036f88ae4ab4d27b5fa Mon Sep 17 00:00:00 2001
From: Craig <3979063+craig8@users.noreply.github.com>
Date: Fri, 3 Nov 2023 17:07:25 +0000
Subject: [PATCH] Brought back working filter

---
 volttron/platform/control/control_utils.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/volttron/platform/control/control_utils.py b/volttron/platform/control/control_utils.py
index 8aad804fd7..c33034e2a2 100644
--- a/volttron/platform/control/control_utils.py
+++ b/volttron/platform/control/control_utils.py
@@ -47,9 +47,15 @@
 
 
 def _calc_min_uuid_length(agents):
-    agent_ids = [agent.uuid for agent in agents]
-    common_len = len(os.path.commonprefix(agent_ids))
-    return common_len + 1
+    n = 0
+    for agent1 in agents:
+        for agent2 in agents:
+            if agent1 is agent2:
+                continue
+            common_len = len(os.path.commonprefix([agent1.uuid, agent2.uuid]))
+            if common_len > n:
+                n = common_len
+    return n + 1
 
 
 def _list_agents(aip):