Hey! Replayed the game with the new patch, the running speed is much better now, not that exploitable anymore. I succeeded in recreating the LocoBug glitch in the two vertical wall LocoBug area. You need to double jump and hold the jump key and then land on the left edge of the Loco Bug. Traps Bun in the rolling animation for a second
and then she gets stuck in air till she is rescued by the LocoBug
This was the only place i could reliably recreate the bug, but it does occur with all the LocoBugs.
Also, sometimes Bun gets an odd animation when sitting on the LocoBug with her eyes glitching out and if she falls from the bug during that animation, she makes this weird face. 
Also found a random Death zone in one of the levels, its also there under the next platform (Pardon my amazing marking skills) 
And the spikes here do not work
All the best against the war of bugs!
P.S - The Bun tired animation does look rather odd as pointed out by the previous guy, and it actually is a river dance! It cancels out death by drowning in the Waterfall event level, If you sit still on a green ledge and Bun starts dancing, then she never drowns in the filling water!