Skachat Mainkraft 181 S Modom -

If you are referring to an "interesting report" regarding the 1.8.1 update, it likely relates to the and changelogs that defined this version:

Corrected mobs jumping incorrectly due to daylight sensors being perceived as full blocks. skachat mainkraft 181 s modom

To play with mods on this version, you typically need to use a launcher that supports for 1.8.1. If you are referring to an "interesting report"