Xwiki 13.10.3 xml code causes Xwiki to stuck in "saving"

Dear Team,

Recently we update our wiki to 13.10.3.
Everything works flawless so thanks for making it smooth with every update.

However we noticed that one of our wiki pages has xml code which mostly works fine but just one particular part of it causes Xwiki to stuck when we click “save”

For example
Fails
<inet-address value="${jboss.bind.address:x.x.x.x}"/>

Works
<inet-address value="${https//:x.x.x.x}"/>

Could you please help us here to understand why it fails?
In the version 11.10.3 it used to work fine. Did something change?

We use CommonMark Markdown 1.2
OS - Ubuntu 18.04