diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01ee4282..65f6b698 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Deleting an import will no longer result in negative points count for the user.
 - Updating stats. #2022
 - Validate trip start date to be earlier than end date. #2057
+- Fog of war radius slider in map v2 settings is now being respected correctly.
+- Applying changes in map v2 settings now works correctly.
 
 
 # [0.36.4] - 2025-12-26
diff --git a/app/javascript/controllers/maps/maplibre/layer_manager.js b/app/javascript/controllers/maps/maplibre/layer_manager.js
index b31fd539..2968713e 100644
--- a/app/javascript/controllers/maps/maplibre/layer_manager.js
+++ b/app/javascript/controllers/maps/maplibre/layer_manager.js
@@ -270,7 +270,7 @@ export class LayerManager {
     // Always create fog layer for backward compatibility
     if (!this.layers.fogLayer) {
       this.layers.fogLayer = new FogLayer(this.map, {
-        clearRadius: 1000,
+        clearRadius: this.settings.fogOfWarRadius || 1000,
         visible: this.settings.fogEnabled || false
       })
       this.layers.fogLayer.add(pointsGeoJSON)
diff --git a/app/javascript/controllers/maps/maplibre/settings_manager.js b/app/javascript/controllers/maps/maplibre/settings_manager.js
index 4a9aae05..5d6ab5ac 100644
--- a/app/javascript/controllers/maps/maplibre/settings_manager.js
+++ b/app/javascript/controllers/maps/maplibre/settings_manager.js
@@ -244,8 +244,8 @@ export class SettingsController {
         if (settings.fogOfWarRadius) {
           fogLayer.clearRadius = settings.fogOfWarRadius
         }
-        // Redraw fog layer
-        if (fogLayer.visible) {
+        // Redraw fog layer if it has data and is visible
+        if (fogLayer.visible && fogLayer.data) {
           await fogLayer.update(fogLayer.data)
         }
       }
diff --git a/app/javascript/maps_maplibre/layers/fog_layer.js b/app/javascript/maps_maplibre/layers/fog_layer.js
index 431226d6..1112a9b7 100644
--- a/app/javascript/maps_maplibre/layers/fog_layer.js
+++ b/app/javascript/maps_maplibre/layers/fog_layer.js
@@ -12,9 +12,11 @@ export class FogLayer {
     this.ctx = null
     this.clearRadius = options.clearRadius || 1000 // meters
     this.points = []
+    this.data = null // Store original data for updates
   }
 
   add(data) {
+    this.data = data // Store for later updates
     this.points = data.features || []
     this.createCanvas()
     if (this.visible) {
@@ -24,6 +26,7 @@ export class FogLayer {
   }
 
   update(data) {
+    this.data = data // Store for later updates
     this.points = data.features || []
     this.render()
   }
@@ -78,6 +81,7 @@ export class FogLayer {
 
     // Clear circles around visited points
     this.ctx.globalCompositeOperation = 'destination-out'
+    this.ctx.fillStyle = 'rgba(0, 0, 0, 1)' // Fully opaque to completely clear fog
 
     this.points.forEach(feature => {
       const coords = feature.geometry.coordinates
diff --git a/e2e/v2/map/layers/advanced.spec.js b/e2e/v2/map/layers/advanced.spec.js
index 965164a4..aa17ab46 100644
--- a/e2e/v2/map/layers/advanced.spec.js
+++ b/e2e/v2/map/layers/advanced.spec.js
@@ -36,6 +36,81 @@ test.describe('Advanced Layers', () => {
 
       expect(await fogToggle.isChecked()).toBe(true)
     })
+
+    test('fog radius setting can be changed and applied', async ({ page }) => {
+      // Enable fog layer first
+      await page.click('button[title="Open map settings"]')
+      await page.waitForTimeout(400)
+      await page.click('button[data-tab="layers"]')
+      await page.waitForTimeout(300)
+
+      const fogToggle = page.locator('label:has-text("Fog of War")').first().locator('input.toggle')
+      await fogToggle.check()
+      await page.waitForTimeout(500)
+
+      // Go to advanced settings tab
+      await page.click('button[data-tab="settings"]')
+      await page.waitForTimeout(300)
+
+      // Find fog radius slider
+      const fogRadiusSlider = page.locator('input[name="fogOfWarRadius"]')
+      await expect(fogRadiusSlider).toBeVisible()
+
+      // Change the slider value using evaluate to trigger input event
+      await fogRadiusSlider.evaluate((slider) => {
+        slider.value = '500'
+        slider.dispatchEvent(new Event('input', { bubbles: true }))
+      })
+      await page.waitForTimeout(200)
+
+      // Verify display value updated
+      const displayValue = page.locator('[data-maps--maplibre-target="fogRadiusValue"]')
+      await expect(displayValue).toHaveText('500m')
+
+      // Verify slider value was set
+      expect(await fogRadiusSlider.inputValue()).toBe('500')
+
+      // Click Apply Settings button
+      const applyButton = page.locator('button:has-text("Apply Settings")')
+      await applyButton.click()
+      await page.waitForTimeout(500)
+
+      // Verify no errors in console
+      const consoleErrors = []
+      page.on('console', msg => {
+        if (msg.type() === 'error') consoleErrors.push(msg.text())
+      })
+      await page.waitForTimeout(500)
+      expect(consoleErrors.filter(e => e.includes('fog_layer'))).toHaveLength(0)
+    })
+
+    test('fog settings can be applied without errors when fog layer is not visible', async ({ page }) => {
+      await page.click('button[title="Open map settings"]')
+      await page.waitForTimeout(400)
+      await page.click('button[data-tab="settings"]')
+      await page.waitForTimeout(300)
+
+      // Change fog radius slider without enabling fog layer
+      const fogRadiusSlider = page.locator('input[name="fogOfWarRadius"]')
+      await fogRadiusSlider.evaluate((slider) => {
+        slider.value = '750'
+        slider.dispatchEvent(new Event('input', { bubbles: true }))
+      })
+      await page.waitForTimeout(200)
+
+      // Click Apply Settings - this should not throw an error
+      const applyButton = page.locator('button:has-text("Apply Settings")')
+      await applyButton.click()
+      await page.waitForTimeout(500)
+
+      // Verify no JavaScript errors occurred
+      const consoleErrors = []
+      page.on('console', msg => {
+        if (msg.type() === 'error') consoleErrors.push(msg.text())
+      })
+      await page.waitForTimeout(500)
+      expect(consoleErrors.filter(e => e.includes('undefined') || e.includes('fog'))).toHaveLength(0)
+    })
   })
 
   test.describe('Scratch Map', () => {