Kog' Maw - Old bug still not resolved...?

A season ago I noted an issue dealing with Kog' Maw's 'corpse' after (passive) death. The problem is in the area of his 'corpse', mouse clicks wont actually register, as if the 'untargetable passive' of Kog persists after death making the ground space ergo; untargetable untill he respawns. I can't imagine this is an intended mechanic, and I'm a little perplexed that it's not been fixed yet. I noticed it today while in a custom game an figured I'd report it. This 'bug' is easily to replicate, simply kill kog and click around the area he dies on.