diff --git a/.github/workflows/validate_pr.yml b/.github/workflows/validate_pr.yml
index 0719ca2e3d..57e8c12b5e 100644
--- a/.github/workflows/validate_pr.yml
+++ b/.github/workflows/validate_pr.yml
@@ -8,10 +8,15 @@ jobs:
   validate-pr:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Check PR Title Format
         uses: actions/github-script@v7
         with:
           script: |
+            const fs = require('fs');
+            const path = require('path');
             const prTitle = context.payload.pull_request.title;
             const titleRegex = /^([\w\s,{}/.]+): .+/;
             
@@ -19,5 +24,21 @@ jobs:
               core.setFailed(`PR title "${prTitle}" does not match required format: directory, ...: description`);
               return;
             }
+
+            const match = prTitle.match(titleRegex);
+            const dirPart = match[1];
+            const directories = dirPart.split(',').map(d => d.trim());
+            const missingDirs = [];
+            for (const dir of directories) {
+              const fullPath = path.join(process.env.GITHUB_WORKSPACE, dir);
+              if (!fs.existsSync(fullPath)) {
+                missingDirs.push(dir);
+              }
+            }
+            
+            if (missingDirs.length > 0) {
+              core.setFailed(`The following directories in the PR title do not exist: ${missingDirs.join(', ')}`);
+              return;
+            }
             
             console.log('✅ PR title format is valid');
diff --git a/accounts/usbwallet/wallet.go b/accounts/usbwallet/wallet.go
index 04e8b60517..3fc121c773 100644
--- a/accounts/usbwallet/wallet.go
+++ b/accounts/usbwallet/wallet.go
@@ -635,7 +635,7 @@ func (w *wallet) SignTx(account accounts.Account, tx *types.Transaction, chainID
 // data is not supported for Ledger wallets, so this method will always return
 // an error.
 func (w *wallet) SignTextWithPassphrase(account accounts.Account, passphrase string, text []byte) ([]byte, error) {
-	return w.SignText(account, accounts.TextHash(text))
+	return w.SignText(account, text)
 }
 
 // SignTxWithPassphrase implements accounts.Wallet, attempting to sign the given
diff --git a/beacon/params/config.go b/beacon/params/config.go
index b01b739e07..437aa53788 100644
--- a/beacon/params/config.go
+++ b/beacon/params/config.go
@@ -38,7 +38,7 @@ import (
 // across signing different data structures.
 const syncCommitteeDomain = 7
 
-var knownForks = []string{"GENESIS", "ALTAIR", "BELLATRIX", "CAPELLA", "DENEB"}
+var knownForks = []string{"GENESIS", "ALTAIR", "BELLATRIX", "CAPELLA", "DENEB", "ELECTRA", "FULU"}
 
 // ClientConfig contains beacon light client configuration.
 type ClientConfig struct {
@@ -103,6 +103,9 @@ func (c *ChainConfig) LoadForks(file []byte) error {
 	epochs["GENESIS"] = 0
 
 	for key, value := range config {
+		if value == nil {
+			continue
+		}
 		if strings.HasSuffix(key, "_FORK_VERSION") {
 			name := key[:len(key)-len("_FORK_VERSION")]
 			switch version := value.(type) {
diff --git a/core/vm/memory.go b/core/vm/memory.go
index 5e11e83748..54bc2b2849 100644
--- a/core/vm/memory.go
+++ b/core/vm/memory.go
@@ -44,6 +44,7 @@ func (m *Memory) Free() {
 	// To reduce peak allocation, return only smaller memory instances to the pool.
 	const maxBufferSize = 16 << 10
 	if cap(m.store) <= maxBufferSize {
+		clear(m.store)
 		m.store = m.store[:0]
 		m.lastGasCost = 0
 		memoryPool.Put(m)
@@ -76,10 +77,14 @@ func (m *Memory) Set32(offset uint64, val *uint256.Int) {
 	val.PutUint256(m.store[offset:])
 }
 
-// Resize resizes the memory to size
+// Resize grows the memory to the requested size.
 func (m *Memory) Resize(size uint64) {
-	if uint64(m.Len()) < size {
-		m.store = append(m.store, make([]byte, size-uint64(m.Len()))...)
+	if uint64(len(m.store)) < size {
+		if uint64(cap(m.store)) >= size {
+			m.store = m.store[:size]
+		} else {
+			m.store = append(m.store, make([]byte, size-uint64(len(m.store)))...)
+		}
 	}
 }
 
diff --git a/core/vm/memory_test.go b/core/vm/memory_test.go
index 41389b729a..3890d18cb5 100644
--- a/core/vm/memory_test.go
+++ b/core/vm/memory_test.go
@@ -83,3 +83,10 @@ func TestMemoryCopy(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkResize(b *testing.B) {
+	memory := NewMemory()
+	for i := range b.N {
+		memory.Resize(uint64(i))
+	}
+}