diff --git a/src/App/Utilities/ThemeManager.cs b/src/App/Utilities/ThemeManager.cs
index 89c598940..fbce368ab 100644
--- a/src/App/Utilities/ThemeManager.cs
+++ b/src/App/Utilities/ThemeManager.cs
@@ -4,6 +4,9 @@ using Bit.App.Services;
 using Bit.App.Styles;
 using Bit.Core;
 using Xamarin.Forms;
+#if !FDROID
+using Microsoft.AppCenter.Crashes;
+#endif
 
 namespace Bit.App.Utilities
 {
@@ -14,61 +17,79 @@ namespace Bit.App.Utilities
 
         public static void SetThemeStyle(string name, ResourceDictionary resources)
         {
-            Resources = () => resources;
+            try
+            {
+                Resources = () => resources;
 
-            // Reset styles
-            resources.Clear();
-            resources.MergedDictionaries.Clear();
+                // Reset styles
+                resources.Clear();
+                resources.MergedDictionaries.Clear();
 
-            // Variables
-            resources.MergedDictionaries.Add(new Variables());
+                // Variables
+                resources.MergedDictionaries.Add(new Variables());
 
-            // Themed variables
-            if (name == "dark")
-            {
-                resources.MergedDictionaries.Add(new Dark());
-                UsingLightTheme = false;
-            }
-            else if (name == "black")
-            {
-                resources.MergedDictionaries.Add(new Black());
-                UsingLightTheme = false;
-            }
-            else if (name == "nord")
-            {
-                resources.MergedDictionaries.Add(new Nord());
-                UsingLightTheme = false;
-            }
-            else if (name == "light")
-            {
-                resources.MergedDictionaries.Add(new Light());
-                UsingLightTheme = true;
-            }
-            else
-            {
-                if (OsDarkModeEnabled())
+                // Themed variables
+                if (name == "dark")
                 {
                     resources.MergedDictionaries.Add(new Dark());
                     UsingLightTheme = false;
                 }
-                else
+                else if (name == "black")
+                {
+                    resources.MergedDictionaries.Add(new Black());
+                    UsingLightTheme = false;
+                }
+                else if (name == "nord")
+                {
+                    resources.MergedDictionaries.Add(new Nord());
+                    UsingLightTheme = false;
+                }
+                else if (name == "light")
                 {
                     resources.MergedDictionaries.Add(new Light());
                     UsingLightTheme = true;
                 }
-            }
+                else
+                {
+                    if (OsDarkModeEnabled())
+                    {
+                        resources.MergedDictionaries.Add(new Dark());
+                        UsingLightTheme = false;
+                    }
+                    else
+                    {
+                        resources.MergedDictionaries.Add(new Light());
+                        UsingLightTheme = true;
+                    }
+                }
 
-            // Base styles
-            resources.MergedDictionaries.Add(new Base());
+                // Base styles
+                resources.MergedDictionaries.Add(new Base());
 
-            // Platform styles
-            if (Device.RuntimePlatform == Device.Android)
-            {
-                resources.MergedDictionaries.Add(new Android());
+                // Platform styles
+                if (Device.RuntimePlatform == Device.Android)
+                {
+                    resources.MergedDictionaries.Add(new Android());
+                }
+                else if (Device.RuntimePlatform == Device.iOS)
+                {
+                    resources.MergedDictionaries.Add(new iOS());
+                }
             }
-            else if (Device.RuntimePlatform == Device.iOS)
+            catch (InvalidOperationException ioex) when (ioex.Message != null && ioex.Message.StartsWith("Collection was modified"))
             {
-                resources.MergedDictionaries.Add(new iOS());
+                // https://github.com/bitwarden/mobile/issues/1689 There are certain scenarios where this might cause "collection was modified; enumeration operation may not execute"
+                // the way I found to prevent this for now was to catch the exception here and move on.
+                // Because on the screens that I found it to happen, the screen is being closed while trying to apply the resources
+                // so we shouldn't be introducing any issues.
+                // TODO: Maybe something like this https://github.com/matteobortolazzo/HtmlLabelPlugin/pull/113 can be implemented to avoid this
+                // on html labels.
+            }
+            catch (Exception ex)
+            {
+#if !FDROID
+                Crashes.TrackError(ex);
+#endif
             }
         }
 
diff --git a/src/iOS.Core/Renderers/CustomLabelRenderer.cs b/src/iOS.Core/Renderers/CustomLabelRenderer.cs
index 3dfaf036f..19db3c40e 100644
--- a/src/iOS.Core/Renderers/CustomLabelRenderer.cs
+++ b/src/iOS.Core/Renderers/CustomLabelRenderer.cs
@@ -1,4 +1,5 @@
-using System.ComponentModel;
+using System;
+using System.ComponentModel;
 using Bit.iOS.Core.Renderers;
 using Bit.iOS.Core.Utilities;
 using UIKit;
@@ -9,34 +10,49 @@ using Xamarin.Forms.Platform.iOS;
 namespace Bit.iOS.Core.Renderers
 {
     public class CustomLabelRenderer : LabelRenderer
-    {
-        protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
-        {
-            base.OnElementChanged(e);
-            if (Control != null && e.NewElement is Label)
-            {
-                UpdateFont();
-            }
-        }
+	{
+		protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
+		{
+			base.OnElementChanged(e);
+			if (Control != null && e.NewElement is Label)
+			{
+				UpdateFont();
+			}
+		}
 
-        protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
-        {
-            base.OnElementPropertyChanged(sender, e);
-            if (e.PropertyName == Label.FontProperty.PropertyName ||
-                e.PropertyName == Label.TextProperty.PropertyName ||
-                e.PropertyName == Label.FormattedTextProperty.PropertyName)
+		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+		{
+            try
             {
-                UpdateFont();
-            }
-        }
+				base.OnElementPropertyChanged(sender, e);
+			}
+			catch (NullReferenceException)
+			{
+				// Do nothing...
+				// There is an issue on Xamarin Forms which throws a null reference
+				// https://appcenter.ms/users/kspearrin/apps/bitwarden/crashes/errors/534094859u/overview
+				// TODO: Maybe something like this https://github.com/matteobortolazzo/HtmlLabelPlugin/pull/113 can be implemented to avoid this
+				// on html labels.
+			}
 
-        private void UpdateFont()
-        {
-            var pointSize = iOSHelpers.GetAccessibleFont<Label>(Element.FontSize);
-            if (pointSize != null)
-            {
-                Control.Font = UIFont.FromDescriptor(Element.Font.ToUIFont().FontDescriptor, pointSize.Value);
-            }
-        }
-    }
+			if (e.PropertyName == Label.FontProperty.PropertyName ||
+				e.PropertyName == Label.TextProperty.PropertyName ||
+				e.PropertyName == Label.FormattedTextProperty.PropertyName)
+			{
+				UpdateFont();
+			}
+		}
+
+		private void UpdateFont()
+		{
+			if (Element is null || Control is null)
+				return;
+
+			var pointSize = iOSHelpers.GetAccessibleFont<Label>(Element.FontSize);
+			if (pointSize != null)
+			{
+				Control.Font = UIFont.FromDescriptor(Element.Font.ToUIFont().FontDescriptor, pointSize.Value);
+			}
+		}
+	}
 }