Every time after reloading the bk-133, the shells in your inventory are split and spread into multiple random stacks within your inventory. They are not able to be combined back together and take up unnecessary amounts of space with the stacks splitting into random low amount stacks of shells. The shells are stuck in the inventory and cannot be taken out to hand or dropped, but everything else in the inventory is fine so this is clear its a bug relating to the shotgun shell reload and not a general desynch since the last update. Other players on the community server of ncrp confirm this too.