Citrix Secure Mail app and RT 4.2.13 no newlines on Plain Text

Dear all,

as described on the below Citrix thread https://discussions.citrix.com/topic/388949-secure-mail-and-request-tracker-rt-formatting-issues/, we are facing a quite annoying issue with mail coming to RT from Citrix Secure Web losing the newline / line breaks and everything appears as a single line of text.

Digging further into this, it seems that base64 encoding is not properly handled by RT.

When Outlook sends the email to RT, we get the following:

The Plain Text part
Content-Transfer-Encoding: 7bit
content-type: text/plain; charset="utf-8"
X-RT-Original-Encoding: utf-8
Content-Length: 31

The HTML part
Content-Transfer-Encoding: quoted-printable
content-type: text/html; charset="utf-8"
X-RT-Original-Encoding: utf-8
Content-Length: 1962

In both cases, the line breaks are properly shown.

When sending from Citrix this is what we get:

The Plain Text part:
content-type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
X-RT-Original-Encoding: utf-8
Content-Length: 11

The HTML part
Content-Transfer-Encoding: base64
content-type: text/html; charset="utf-8"
X-RT-Original-Encoding: utf-8
Content-Length: 296

The issue is only present on the Plain Text version of Citrix where no newlines are shown and all text comes in a single line.

We have updated MIME::x to the latest versions.

Any ideas?