Problem is that doxygen adds \\* after enum values documentation in latex output. When ENUM_VALUES_PER_LINE is set to 1 this symbol(\\*) prohibits a page break and enum values documentation goes beyond page, page bottom margin and most of it gets lost.

My code looks like:

/*!
 *  @brief  Brief enum description
 */
enum EnumName
{
    EnumName_EnumVal1 = SOME_MACRO(1),  /**< EnumName_EnumVal1 description */
    EnumName_EnumVal2 = SOME_MACRO(2),  /**< EnumName_EnumVal2 description */
    EnumName_EnumVal3 = SOME_MACRO(3),  /**< EnumName_EnumVal3 description */
(more values - enough to fully cover 2-3 A4 pages)
    EnumName_Last  /**< EnumName_EnumVal description */
}

I think problem is with if-else in function:
latexgen.cpp:2127: void LatexGenerator::lineBreak(const char *)

since \\* is generated by its else branch.