From 465f991035edce1bb2940d679effc9de15a0e475 Mon Sep 17 00:00:00 2001
From: Tyera Eulberg <teulberg@gmail.com>
Date: Fri, 15 Jan 2021 00:45:44 -0700
Subject: [PATCH] Use highest-confirmed-root for max check (#14599)

---
 banks-server/src/banks_server.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/banks-server/src/banks_server.rs b/banks-server/src/banks_server.rs
index 776b8b8af3..65d0f085d9 100644
--- a/banks-server/src/banks_server.rs
+++ b/banks-server/src/banks_server.rs
@@ -169,7 +169,9 @@ impl Banks for BanksServer {
         let (slot, status) = bank.get_signature_status_slot(&signature)?;
         let r_block_commitment_cache = self.block_commitment_cache.read().unwrap();
 
-        let confirmations = if r_block_commitment_cache.root() >= slot {
+        let confirmations = if r_block_commitment_cache.root() >= slot
+            && r_block_commitment_cache.highest_confirmed_root() >= slot
+        {
             None
         } else {
             r_block_commitment_cache