CONF-16833 attempted to fix long word PDF generation being cut off.
Unfortunately it's still broken when the text is wrapped with macros that have icons (eg. info, tips, warning) despite that the CSS word-wrap applied in PDF stylesheet.
This may be because there is an extra white space applied on the left to display the icon, causing the text on the right to be truncated.
The words do not need to use chinese characters, eg the following will show the problem (without the noformat):
The bbbbbb is not required, but ensures there is a p wrapped around the string of 'a's. The 'z's will be broken correctly but not the 'a's