Sonic Classic Collection/Glitches

This article contains a list of glitches from Sonic Classic Collection. Unless otherwise noted, all glitch names are conjectural. Many of them have not been confirmed by Sega.

List of glitches
Sometimes when Knuckles' lives reach 0 in Sonic the Hedgehog 2, the resulting Game Over screen will somehow appear distorted.
 * Game Over distortion:

When playing as Sonic or Knuckles in Sonic the Hedgehog 2, the framerate will slow down and the background will not be able to keep up, and will also flash. This is the only game on Sonic Classic Collection with these issues.
 * Background and framerate issues:

Occasionally, when Knuckles drowns in Chemical Plant Zone Act 2 (if the player doesn't make it in time), Knuckles will die and keep running as he falls down.
 * Running death: