diff --git a/CHANGELOG.md b/CHANGELOG.md
index 194612307ba..ed764d40c70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@
 - Fix saving other encryption settings besides enigma's (#9240)
 - Fix unneeded php command use in installto.sh and deluser.sh scripts (#9237)
 - Fix TinyMCE localization installation (#9266)
+- Fix bug where trailing non-ascii characters in email addresses could have been removed in recipient input (#9257)
 
 ## Release 1.6.5
 
diff --git a/skins/elastic/README.md b/skins/elastic/README.md
index 8c663cd6a04..dae4b5a33c7 100644
--- a/skins/elastic/README.md
+++ b/skins/elastic/README.md
@@ -48,8 +48,7 @@ or after installing it on the destination system.
 FOR DEVELOPERS
 --------------
 
-- Supported browsers: IE11+, Edge, Last 2 versions for Chrome/Firefox/Safari,
-  Android Browser 5+, iOS Safari 9+.
+- Supported browsers: Last 2 versions of Edge/Chrome/Firefox/Safari.
 
 - Skin color palette changes and other css modifications can be done
   via _styles.less and _variables.less files. Where you can overwrite all
diff --git a/skins/elastic/ui.js b/skins/elastic/ui.js
index 0b0bc5c6bf6..633256e240a 100644
--- a/skins/elastic/ui.js
+++ b/skins/elastic/ui.js
@@ -3497,7 +3497,7 @@ function rcube_elastic_ui()
                     recipients.push({
                         name: '',
                         email: email.replace(/(^<|>$)/g, '') // trim < and > characters
-                            .replace(/[^a-z]$/gi, '') // remove trailing comma or any non-letter character at the end (#7899)
+                            .replace(/[^\p{L}]$/giu, '') // remove trailing comma or any non-letter character at the end (#7899, #9257)
                     });
 
                     str = str.replace(email, '').trim();