diff --git a/frontend/src/ts/input/handlers/insert-text.ts b/frontend/src/ts/input/handlers/insert-text.ts
index 0dd3d55ccf2a..953d0938ae46 100644
--- a/frontend/src/ts/input/handlers/insert-text.ts
+++ b/frontend/src/ts/input/handlers/insert-text.ts
@@ -62,12 +62,12 @@ type OnInsertTextParams = {
 
 export async function onInsertText(options: OnInsertTextParams): Promise<void> {
   const { now, lastInMultiIndex, isCompositionEnding } = options;
-  const { inputValue } = getInputElementValue();
 
   if (options.data.length > 1) {
     // remove the entire data from the input value
     // make sure to not call TestInput.input.syncWithInputElement in here
     // it will be updated later in the body of onInsertText
+    const { inputValue } = getInputElementValue();
     setInputElementValue(inputValue.slice(0, -options.data.length));
     for (let i = 0; i < options.data.length; i++) {
       const char = options.data[i] as string;
@@ -95,19 +95,17 @@ export async function onInsertText(options: OnInsertTextParams): Promise<void> {
     return;
   }
 
+  // input and target word
+  const testInput = TestInput.input.current;
+  const currentWord = TestWords.words.getCurrent();
+
   // if the character is visually equal, replace it with the target character
   // this ensures all future equivalence checks work correctly
-  let normalizedData: string | null = null;
-  const targetChar =
-    TestWords.words.getCurrent()[TestInput.input.current.length];
-  if (
-    targetChar !== undefined &&
-    areCharactersVisuallyEqual(options.data, targetChar, Config.language)
-  ) {
-    replaceInputElementLastValueChar(targetChar);
-    normalizedData = targetChar;
-  }
-
+  const normalizedData = normalizeDataAndUpdateInputIfNeeded(
+    options.data,
+    testInput,
+    currentWord
+  );
   const data = normalizedData ?? options.data;
 
   // start if needed
@@ -118,8 +116,6 @@ export async function onInsertText(options: OnInsertTextParams): Promise<void> {
   // helper consts
   const lastInMultiOrSingle =
     lastInMultiIndex === true || lastInMultiIndex === undefined;
-  const testInput = TestInput.input.current;
-  const currentWord = TestWords.words.getCurrent();
   const wordIndex = TestState.activeWordIndex;
   const charIsSpace = isSpace(data);
   const charIsNewline = data === "\n";
@@ -135,7 +131,10 @@ export async function onInsertText(options: OnInsertTextParams): Promise<void> {
   // is char correct
   const funboxCorrect = findSingleActiveFunboxWithFunction(
     "isCharCorrect"
-  )?.functions.isCharCorrect(data, currentWord[inputValue.length] ?? "");
+  )?.functions.isCharCorrect(
+    data,
+    currentWord[(testInput + data).length - 1] ?? ""
+  );
   const correct =
     funboxCorrect ??
     isCharCorrect({
@@ -148,7 +147,7 @@ export async function onInsertText(options: OnInsertTextParams): Promise<void> {
   // word navigation check
   const noSpaceForce =
     isFunboxActiveWithProperty("nospace") &&
-    TestInput.input.current.length === TestWords.words.getCurrent().length;
+    (testInput + data).length === TestWords.words.getCurrent().length;
   const shouldGoToNextWord =
     ((charIsSpace || charIsNewline) && !shouldInsertSpace) || noSpaceForce;
 
@@ -286,6 +285,23 @@ export async function onInsertText(options: OnInsertTextParams): Promise<void> {
   }
 }
 
+function normalizeDataAndUpdateInputIfNeeded(
+  data: string,
+  testInput: string,
+  currentWord: string
+): string | null {
+  let normalizedData: string | null = null;
+  const targetChar = currentWord[testInput.length];
+  if (
+    targetChar !== undefined &&
+    areCharactersVisuallyEqual(data, targetChar, Config.language)
+  ) {
+    replaceInputElementLastValueChar(targetChar);
+    normalizedData = targetChar;
+  }
+  return normalizedData;
+}
+
 export async function emulateInsertText(
   options: OnInsertTextParams
 ): Promise<void> {
diff --git a/frontend/src/ts/test/funbox/funbox-functions.ts b/frontend/src/ts/test/funbox/funbox-functions.ts
index 2b66718afc86..d26512871475 100644
--- a/frontend/src/ts/test/funbox/funbox-functions.ts
+++ b/frontend/src/ts/test/funbox/funbox-functions.ts
@@ -257,25 +257,34 @@ const list: Partial<Record<FunboxName, FunboxFunctions>> = {
     },
     isCharCorrect(char: string, originalChar: string): boolean {
       if (
-        (char === "a" || char === "ArrowLeft" || char === "j") &&
+        (char === "a" ||
+          char === "ArrowLeft" ||
+          char === "j" ||
+          char === "←") &&
         originalChar === "←"
       ) {
         return true;
       }
       if (
-        (char === "s" || char === "ArrowDown" || char === "k") &&
+        (char === "s" ||
+          char === "ArrowDown" ||
+          char === "k" ||
+          char === "↓") &&
         originalChar === "↓"
       ) {
         return true;
       }
       if (
-        (char === "w" || char === "ArrowUp" || char === "i") &&
+        (char === "w" || char === "ArrowUp" || char === "i" || char === "↑") &&
         originalChar === "↑"
       ) {
         return true;
       }
       if (
-        (char === "d" || char === "ArrowRight" || char === "l") &&
+        (char === "d" ||
+          char === "ArrowRight" ||
+          char === "l" ||
+          char === "→") &&
         originalChar === "→"
       ) {
         return true;