Finding
Long sentence with single and double byte characters gets line break between single byte word and double byte character as attached (TheProblem.jpg). I tried to solve the problem by making use of PDF Stylesheet, but in vain.

Workaround
There are two workarounds that I have found so far:

• Embrace single byte phrase with <span> tag by using Confluence Source Editor (See workaround.jpg)
• Export to Word and covert the Word document to PDF