This morning I was running HDOL and recieved a book as loot. It was book of cleave.....Which was cool as I ahd already maxed out cleave......or so I thought. The Rank of the book showed 16/15 as it would if you are maxed out and a level of 99 ? that was weird in itself.so when the fighting stopped I right clicked it and disappeared..now the fun part the trainer box still shows level 93 for Cleave and level 15/15 .definate bug.

Yup, pretty sure this is a known one. The bug usually is described as having a rank higher than normal IE 16/15 or 21/20 but for most skills this puts the required level over 100. I know cleave and another one (if i had my chart at work I could tell you) max out well below the 100 cap and the algorithm for required level shows that the skill rank is attainable even through it isnt.

This is the same bug that shows a Rank 2/1 Book of Teleport as being a level 100 skill even though it doesnt truly exist.