Unwanted line break in content fields

Hello,

I keep getting unwanted line breaks when I insert a content tag. For example...

Code:
<p>Ipsum lorem dolor<singleline label='MyLabel'>my text</singleline>sit amet<p>

Renders:

Ipsum lorem
MyLabel
sit amet

I can't seem to get the singleline to continue on as one line of text.

Help?
Best,

See why 200,000 companies worldwide love Campaign Monitor.

From Australia to Zimbabwe, and everywhere in between, companies count on Campaign Monitor for email campaigns that boost the bottom line.

Get started for free