[FIX] im_livechat,mail: various livechat fixes

- prevent concurrent opening of the chat window
- take into account the placeholder value of the livechat session record
- don't send welcome message if empty

1 files changed, 1 insertions, 1 deletions

diff --git a/addons/mail/static/src/js/chat_window.js b/addons/mail/static/src/js/chat_window.js
index 63074b403c9..95ac9dd8897 100644
--- a/addons/mail/static/src/js/chat_window.js
+++ b/addons/mail/static/src/js/chat_window.js
@@ -24,10 +24,10 @@ return Widget.extend({
         this._super(parent);
         this.title = title;
         this.channel_id = channel_id;
-        this.placeholder = _t("Say something");
         this.folded = is_folded;
         this.options = _.defaults(options || {}, {
             display_stars: true,
+            placeholder: _t("Say something"),
         });
         this.unread_msgs = unread_msgs || 0;
         this.is_hidden = false;