I have a serious problem when using xelatex with tcolorbox: the text that follows a breakable tcolorbox simply disappear! The problem does not arise with pdflatex, just with xelatex. I am using TexLive (MacTeX) 2014 and tcolorbox 3.05.
Here is a minimal working example: you can switch between xelatex and pdflatex by changing the first (commented) line in many tex editors, e.g. TeXshop.
%!TEX TS-program = xelatex
\documentclass[11pt,usletter]{book}
\usepackage[breakable]{tcolorbox}
\usepackage{blindtext}
\begin{document}
\begin{tcolorbox}[colback=red!5!white,colframe=red!75!black,title=test, breakable]
\blindtext[4]
\end{tcolorbox}
\blindtext[4]
\end{document}
tcolorboxsolving the problem is deployed. With 3.11 the problem is still present. – egreg Aug 02 '14 at 22:19tcolorboxversion3.12 (2014/07/29)solves or circumvents your problem? I cannot test myself. Also, see http://tex.stackexchange.com/questions/186139/last-xelatex-colors-text-in-white-in-some-circumstances/201611#201611 – Thomas F. Sturm Sep 17 '14 at 10:483.12 (2014/07/29)? I've changed the implementation to circumvent a similar problem. – Thomas F. Sturm Sep 17 '14 at 10:53