I am not sure if it is the mod or an interaction with other mods but testing so far seems to only occur with this mod installed.
Usually from level 39-40 but has also started earlier. Everything is fine and then all of a sudden the next level gives 100's of points. once that has started everything i hit (grass for example) grants huge amounts of XP and suddenly i have 1000+ skill points.
I removed 7 days from steam and %appdata% created a new world and player profile. Installed mods back and the compopack. I did not install the 187 slot backpack. No issues past 39 and leveling worked as expected. Logged out, copied 187slot backpack back in. XP Bar is empty even though prior to installing the mod i had granted XP just below 40 so the skill bar was almost full. I killed some zombies and it's raining XP and skill points
I am running 18.2B5 but had the same problem on the previous version. All mods listed below updated as of yesterday.
Mods Installed
GrassCutter
JaxTeller718{BirdsNestandTrashDestroy,WorkingMicrowave,WorkingStoves}
StallionsDens{EverythingisSellable,ExtraRecipes,HomeBrewery,LootableObjects,Pallets,StoreShelves}
Valmars{ArmoryWorkBench,DyeStation,WorkingOvensandSinks}