A number of glitches were recently used in a run (first on SRC by MichaelK who learned of it from a run on bilibili in June). Here is the Mod Team's stance on how Restricted and Unrestricted differ, based on some notable glitches.

Falling through the ground at a Confluence by resting and teleporting: Banned from Restricted The Mod Team considers this to be a major bug that drastically alters the spirit and route of Unrestricted categories.

Dash-canceling with Prelude (or other) skill: Banned from Restricted While this may not appear to be a major glitch, and may even appear in line with being able to dash out of skills, the Mod Team considers this too altering to "vanilla" gameplay movement.

Attack-cancelling with an empty weapon: Banned from Restricted This glitch allows players to rapidly attack enemies, bosses in particular, and often stunlock them, thereby allowing them to engage with bosses less. This also requires rapid mashing between button, which may not be accessible for some players.

Breaking extra first Dew Crystals that ??? (42) spawns after the scripted death: Banned in Restricted. Allowed in Unrestricted BUT players must include the time spent spawning extra Crystals as a part of their run. Players have found that if the first Dew Crystal that ??? (42) spawns after the scripted death is skipped and the run is reset, the Crystal will be there in subsequent runs. This has enabled players to collect at least 700 Dew at this location at once (approx. 100 Dew per Crystal). In Unrestricted, players are allowed to reset the file multiple times to accumulate spawned Crystals, but the time spent doing this must be included in the run. Doing so makes IGT unable to be submitted, as it cannot be properly verified.