Many glitches related to Level 7 (swim speed boost) & 8 (Abandoned Level 0 skip) have been patched. You have to downgrade your version to 3.0.
However, the “Electrical Skip” is still a thing and remains unpatched (last I checked). It’s hard to learn, but easy to master. You need to simultaneously walk & jump into the entry gate at a certain angle. As of now, there’s no consistent way of clipping through the ceiling as you may fall into the void. (Don’t worry, though. You can just restart the level to go back and try again.)
No Major Glitches rules were updated to include all disallowed glitches instead of all allowed glitches. Hopefully that makes this category less confusing. Also running with TVs in Level 188 Expanded is allowed with these new rules.
