Hi,
I can reproduce this behaviour, r.oder.ich has mentioned. I already had trouble with some projects because of that - now I know the reason.
I often provide my customers with a shortcut-kind-of chunk, that puts out a company name, e. g.
{{3v}} -> 3<span class="v">v</span>-immobilien
fourroses666's solution assumes, that a editor is able to create/modify chunks. This is forbidden in my concept of roles and rights and therefore no alternative.
A workaround is to place the chunk inside another tag, like
<p><span>{{someChunk}}</span></p>
or
<p><span>{{someChunk}}</span> Text here.</p>
But I then, I have to tell my customers to use the HTML-Editor... Better not.
I can also state, that this behaviour starts with 1.0.9 and wasn't there in 1.0.8. So, there might be some changes in TinyMCE implementation in the community driven MODx Evo.
Help will be highly appreciable,
Chris.