The issue with line breaks seems to be still (again?) active. The symptoms are the same as described in ID: 2970598. The problem occurs in Safari 5.0.5 but not in Firefox. Also it can be removed by putting the Math-expression in a <nobr>...</nobr> construct which is weird because in the answer to the problem it is mentioned that jsmath puts those tags around by itself. Has the automatic adding of <nobr>...</nobr> been removed and can I activate it in some way?