diff --git a/frontend-modern/src/components/Docker/DockerUnifiedTable.tsx b/frontend-modern/src/components/Docker/DockerUnifiedTable.tsx
index fd8d862..a1de9e7 100644
--- a/frontend-modern/src/components/Docker/DockerUnifiedTable.tsx
+++ b/frontend-modern/src/components/Docker/DockerUnifiedTable.tsx
@@ -1401,12 +1401,9 @@ const DockerContainerRow: Component<{
         <For each={DOCKER_COLUMNS}>
           {(column) => (
             <td
-              class="py-0.5 align-middle whitespace-nowrap"
+              class={`py-0.5 align-middle whitespace-nowrap ${column.id === 'resource' ? 'max-w-[300px]' : ''}`}
               style={{
                 "min-width": column.id === 'cpu' || column.id === 'memory' ? '140px' : undefined,
-                // Force resource column to respect truncation for very long names (issue #789)
-                "max-width": column.id === 'resource' ? '0' : undefined,
-                "width": column.id === 'resource' ? '25%' : undefined,
               }}
             >
               {renderCell(column)}
@@ -2231,12 +2228,9 @@ const DockerServiceRow: Component<{
         <For each={DOCKER_COLUMNS}>
           {(column) => (
             <td
-              class="py-0.5 align-middle whitespace-nowrap"
+              class={`py-0.5 align-middle whitespace-nowrap ${column.id === 'resource' ? 'max-w-[300px]' : ''}`}
               style={{
                 "min-width": column.id === 'cpu' || column.id === 'memory' ? '140px' : undefined,
-                // Force resource column to respect truncation for very long names (issue #789)
-                "max-width": column.id === 'resource' ? '0' : undefined,
-                "width": column.id === 'resource' ? '25%' : undefined,
               }}
             >
               {renderCell(column)}
diff --git a/internal/alerts/alerts_test.go b/internal/alerts/alerts_test.go
index 2e15fcc..6f8dde9 100644
--- a/internal/alerts/alerts_test.go
+++ b/internal/alerts/alerts_test.go
@@ -14740,7 +14740,6 @@ func TestLoadActiveAlerts(t *testing.T) {
 
 	t.Run("skips old alerts", func(t *testing.T) {
 		m := newTestManager(t)
-		m.ClearActiveAlerts()
 
 		// Create an old alert (>24 hours)
 		startTime := time.Now().Add(-25 * time.Hour)
@@ -14761,8 +14760,10 @@ func TestLoadActiveAlerts(t *testing.T) {
 		// Save to disk
 		_ = m.SaveActiveAlerts()
 
-		// Clear and reload
-		m.ClearActiveAlerts()
+		// Clear in-memory map only (don't use ClearActiveAlerts which triggers async save)
+		m.mu.Lock()
+		m.activeAlerts = make(map[string]*Alert)
+		m.mu.Unlock()
 
 		err := m.LoadActiveAlerts()
 		if err != nil {
@@ -14780,7 +14781,6 @@ func TestLoadActiveAlerts(t *testing.T) {
 
 	t.Run("skips old acknowledged alerts", func(t *testing.T) {
 		m := newTestManager(t)
-		m.ClearActiveAlerts()
 
 		// Create an alert acknowledged >1 hour ago
 		startTime := time.Now().Add(-30 * time.Minute)
@@ -14805,8 +14805,10 @@ func TestLoadActiveAlerts(t *testing.T) {
 		// Save to disk
 		_ = m.SaveActiveAlerts()
 
-		// Clear and reload
-		m.ClearActiveAlerts()
+		// Clear in-memory map only (don't use ClearActiveAlerts which triggers async save)
+		m.mu.Lock()
+		m.activeAlerts = make(map[string]*Alert)
+		m.mu.Unlock()
 
 		err := m.LoadActiveAlerts()
 		if err != nil {
@@ -14824,7 +14826,6 @@ func TestLoadActiveAlerts(t *testing.T) {
 
 	t.Run("restores acknowledgment state", func(t *testing.T) {
 		m := newTestManager(t)
-		m.ClearActiveAlerts()
 
 		// Create an acknowledged alert
 		startTime := time.Now().Add(-10 * time.Minute)
@@ -14849,8 +14850,11 @@ func TestLoadActiveAlerts(t *testing.T) {
 		// Save to disk
 		_ = m.SaveActiveAlerts()
 
-		// Clear and reload
-		m.ClearActiveAlerts()
+		// Clear in-memory maps only (don't use ClearActiveAlerts which triggers async save)
+		m.mu.Lock()
+		m.activeAlerts = make(map[string]*Alert)
+		m.ackState = make(map[string]ackRecord)
+		m.mu.Unlock()
 
 		err := m.LoadActiveAlerts()
 		if err != nil {
diff --git a/pkg/fsfilters/filters.go b/pkg/fsfilters/filters.go
index 213f577..2665632 100644
--- a/pkg/fsfilters/filters.go
+++ b/pkg/fsfilters/filters.go
@@ -170,5 +170,16 @@ func ShouldSkipFilesystem(fsType, mountpoint string, totalBytes, usedBytes uint6
 		}
 	}
 
+	// EnhanceCP uses /var/container_tmp/{uuid}/merged for container overlays.
+	// Filter these as they're ephemeral container layers, not user storage. Related to #790.
+	if strings.Contains(mountpoint, "/container_tmp/") {
+		for _, pattern := range containerOverlayPatterns {
+			if strings.Contains(mountpoint, pattern) {
+				reasons = append(reasons, "container-overlay")
+				break
+			}
+		}
+	}
+
 	return len(reasons) > 0, reasons
 }
diff --git a/pkg/fsfilters/filters_test.go b/pkg/fsfilters/filters_test.go
index 67b7e1b..1298907 100644
--- a/pkg/fsfilters/filters_test.go
+++ b/pkg/fsfilters/filters_test.go
@@ -179,6 +179,9 @@ func TestShouldSkipFilesystem(t *testing.T) {
 		{"enhance containers overlay", "ext4", "/var/local/enhance/containers/abc123/overlay/merged", 1000000, 500000, true},
 		{"custom containers diff", "ext4", "/opt/containers/myapp/diff/layer", 1000000, 500000, true},
 		{"custom containers overlay2", "ext4", "/data/containers/xyz/overlay2/layer1", 1000000, 500000, true},
+		// EnhanceCP container_tmp paths (issue #790)
+		{"enhancecp container_tmp merged", "overlay", "/var/container_tmp/0d6eaae4-1aa0-4aad-a9d9-d430329c2e38/merged", 1000000, 500000, true},
+		{"enhancecp container_tmp overlay", "overlay", "/var/container_tmp/abc123/overlay/layer", 1000000, 500000, true},
 
 		// TrueNAS SCALE Docker overlay paths (issue #718)
 		{"truenas ix-apps docker overlay2", "zfs", "/mnt/.ix-apps/docker/overlay2/6c9aad59ec9b0bc33d5e374/merged", 173 * 1024 * 1024 * 1024 * 1024, 399 * 1024 * 1024, true},