Index: openacs-4/packages/xowiki/www/resources/chat.css
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/resources/Attic/chat.css,v
diff -u -N -r1.6 -r1.7
--- openacs-4/packages/xowiki/www/resources/chat.css	22 Nov 2018 12:44:47 -0000	1.6
+++ openacs-4/packages/xowiki/www/resources/chat.css	23 Nov 2018 19:33:01 -0000	1.7
@@ -86,7 +86,13 @@
     flex-direction: column;
     order: 1;
     justify-content: flex-end;
-    word-break: break-all;
+    overflow-wrap: break-word;
+    word-wrap: break-word;
+    -webkit-hyphens: auto;
+    -ms-hyphens: auto;
+    -moz-hyphens: auto;
+    hyphens: auto;
+    min-width: 0px; // See https://github.com/philipwalton/flexbugs/issues/39
 }
 
 #xowiki-chat-messages {