Always create a new session

dist/converse.js

@@ -71908,12 +71908,9 @@ var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_
         },
 
         getSessionCipher(jid, id) {
-          if (!this.session_cipher) {
           const _converse = this.__super__._converse,
                 address = new libsignal.SignalProtocolAddress(jid, id);
           this.session_cipher = new window.libsignal.SessionCipher(_converse.omemo_store, address);
-          }
-
           return this.session_cipher;
         },
 

src/converse-omemo.js

@@ -332,11 +332,9 @@
                 },
 
                 getSessionCipher (jid, id) {
-                    if (!this.session_cipher) {
                     const { _converse } = this.__super__,
                             address = new libsignal.SignalProtocolAddress(jid, id);
                     this.session_cipher = new window.libsignal.SessionCipher(_converse.omemo_store, address);
-                    }
                     return this.session_cipher;
                 },