From 92f303bb9d3c58bca6ee4e37a301db2f2415d3f6 Mon Sep 17 00:00:00 2001
From: VardanRattan <vardanlaptop44@gmail.com>
Date: Fri, 6 Feb 2026 21:54:26 +0530
Subject: [PATCH 1/3] fix(input): derive caps lock state from keyboard events

---
 frontend/src/ts/test/caps-warning.ts | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/frontend/src/ts/test/caps-warning.ts b/frontend/src/ts/test/caps-warning.ts
index 87a7ed847ac7..bd1f2afd69c4 100644
--- a/frontend/src/ts/test/caps-warning.ts
+++ b/frontend/src/ts/test/caps-warning.ts
@@ -23,13 +23,10 @@ function hide(): void {
 }
 
 function update(event: KeyboardEvent): void {
-  if (event.key === "CapsLock" && capsState !== null) {
-    capsState = !capsState;
-  } else {
-    const modState = event.getModifierState?.("CapsLock");
-    if (modState !== undefined) {
-      capsState = modState;
-    }
+  const modState = event.getModifierState?.("CapsLock");
+
+  if (modState !== undefined) {
+    capsState = modState;
   }
 
   try {

From 0b72863e43c74bd72473306b199b0a505cffb37b Mon Sep 17 00:00:00 2001
From: VardanRattan <vardanlaptop44@gmail.com>
Date: Sat, 7 Feb 2026 12:57:48 +0530
Subject: [PATCH 2/3] fix(caps-warning): defer CapsLock modifier read on Linux

---
 frontend/src/ts/test/caps-warning.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/frontend/src/ts/test/caps-warning.ts b/frontend/src/ts/test/caps-warning.ts
index bd1f2afd69c4..ec14e045c55a 100644
--- a/frontend/src/ts/test/caps-warning.ts
+++ b/frontend/src/ts/test/caps-warning.ts
@@ -22,7 +22,7 @@ function hide(): void {
   }
 }
 
-function update(event: KeyboardEvent): void {
+function updateFromEvent(event: KeyboardEvent): void {
   const modState = event.getModifierState?.("CapsLock");
 
   if (modState !== undefined) {
@@ -38,6 +38,16 @@ function update(event: KeyboardEvent): void {
   } catch {}
 }
 
+function update(event: KeyboardEvent): void {
+  // Linux: CapsLock modifier state may not be updated synchronously
+  // when the CapsLock key event fires, so defer the read.
+  if (Misc.isLinux() && event.key === "CapsLock") {
+    setTimeout(() => updateFromEvent(event), 0);
+  } else {
+    updateFromEvent(event);
+  }
+}
+
 document.addEventListener("keyup", update);
 
 document.addEventListener("keydown", (event) => {

From 897dbd5d8bf207e0fcd1aa6d404b01e73fffd6b4 Mon Sep 17 00:00:00 2001
From: VardanRattan <vardanlaptop44@gmail.com>
Date: Sat, 7 Feb 2026 19:15:06 +0530
Subject: [PATCH 3/3] fix(caps-warning): handle CapsLock keydown on Linux

---
 frontend/src/ts/test/caps-warning.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frontend/src/ts/test/caps-warning.ts b/frontend/src/ts/test/caps-warning.ts
index ec14e045c55a..3ba5d90065e9 100644
--- a/frontend/src/ts/test/caps-warning.ts
+++ b/frontend/src/ts/test/caps-warning.ts
@@ -51,5 +51,9 @@ function update(event: KeyboardEvent): void {
 document.addEventListener("keyup", update);
 
 document.addEventListener("keydown", (event) => {
-  if (Misc.isMac()) update(event);
+  if (Misc.isMac()) {
+    update(event);
+  } else if (Misc.isLinux() && event.key === "CapsLock") {
+    update(event);
+  }
 });