@@ -229,6 +229,17 @@ describe('runtime i18n', () => {
 }-->!</div>`);
   });
 
+  it('should strip replacement characters in translations', () => {
+    loadTranslations({
+      [computeMsgId('Hello {$START_TAG_SPAN}world{$CLOSE_TAG_SPAN}!', '')]:
+        'Bonjour \uFFFD#100\uFFFD \uFFFD0\uFFFD {$START_TAG_SPAN}monde{$CLOSE_TAG_SPAN}!',
+    });
+    const fixture = initWithTemplate(AppComp, `<div i18n>Hello <span>world</span>!</div>`);
+    expect(fixture.nativeElement.innerHTML).toEqual(
+      `<div>Bonjour #100 0 <span>monde</span>!</div>`,
+    );
+  });
+
   it('should support multiple i18n blocks', () => {
     loadTranslations({
       [computeMsgId('trad {$INTERPOLATION}')]: 'traduction {$INTERPOLATION}',
 
@@ -95,6 +95,7 @@ export function translate(
  * @param message the message to be parsed.
  */
 export function parseTranslation(messageString: TargetMessage): ParsedTranslation {
+  messageString = messageString.replace(/\uFFFD/g, '');
   const parts = messageString.split(/{\$([^}]*)}/);
   const messageParts = [parts[0]];
   const placeholderNames: string[] = [];
@@ -122,6 +123,7 @@ export function makeParsedTranslation(
   messageParts: string[],
   placeholderNames: string[] = [],
 ): ParsedTranslation {
+  messageParts = messageParts.map((part) => part.replace(/\uFFFD/g, ''));
   let messageString = messageParts[0];
   for (let i = 0; i < placeholderNames.length; i++) {
     messageString += `{$${placeholderNames[i]}}${messageParts[i + 1]}`;
 
@@ -53,6 +53,14 @@ describe('utils', () => {
         'a{$ph1}b{$ph2}c',
       );
     });
+
+    it('should strip replacement characters from message parts', () => {
+      const translation = makeParsedTranslation(['a\uFFFD#1', 'b\uFFFD*1:1'], ['ph1']);
+      expect(translation.messageParts).toEqual(
+        makeTemplateObject(['a#1', 'b*1:1'], ['a#1', 'b*1:1']),
+      );
+      expect(translation.text).toEqual('a#1{$ph1}b*1:1');
+    });
   });
 
   describe('parseTranslation', () => {
@@ -108,6 +116,13 @@ describe('utils', () => {
       expect(translation.messageParts.raw).toEqual(['', '', '']);
       expect(translation.placeholderNames).toEqual(['one', 'two']);
     });
+
+    it('should strip replacement characters from message parts', () => {
+      const translation = parseTranslation('a\uFFFD#1{$one}\uFFFD:marker:b\uFFFD');
+      expect(translation.messageParts).toEqual(['a#1', ':marker:b']);
+      expect(translation.messageParts.raw).toEqual(['a#1', '\\:marker:b']);
+      expect(translation.text).toEqual('a#1{$one}:marker:b');
+    });
   });
 
   describe('translate', () => {