From 4948b9b5869d0cf28a5a430e9cf6db48018b1189 Mon Sep 17 00:00:00 2001
From: Armin Schrenk <armin.schrenk@skymatic.de>
Date: Fri, 13 Mar 2026 17:06:50 +0100
Subject: [PATCH] prevent data races

---
 .../java/org/cryptomator/ui/fxapp/FxApplicationWindows.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/cryptomator/ui/fxapp/FxApplicationWindows.java b/src/main/java/org/cryptomator/ui/fxapp/FxApplicationWindows.java
index 365647087..9e06f3921 100644
--- a/src/main/java/org/cryptomator/ui/fxapp/FxApplicationWindows.java
+++ b/src/main/java/org/cryptomator/ui/fxapp/FxApplicationWindows.java
@@ -223,14 +223,14 @@ public class FxApplicationWindows {
 	private static class CachedLazy<T> implements Lazy<T> {
 
 		private final Supplier<T> supplier;
-		private T instance = null;
+		private volatile T instance = null;
 
 		public CachedLazy(Supplier<T> supplier) {
 			this.supplier = supplier;
 		}
 
 		@Override
-		public T get() {
+		public synchronized T get() {
 			if (instance == null) {
 				instance = supplier.get();
 			}