Sneaking On Edge Of Wall Block Flags Anti-Cheat

[lowercasebtw]

General Information

https://dump.viaversion.com/5a3afe7dd9e0f96a5632b3c076516551dea63201d3c18ba9d23ff7dcc102d771

Bug Description

When sneaking on the edge of a cobble wall/any wall variant, GrimAC flags for NoFall/Simulation

Steps to Reproduce

Join eu.loyisa.cn as 1.8.x

Sneak on edge of cobble wall

Expected Behavior

Not flag and probably fall off

[Exterminate5573]

Not flag and probably fall off

Please test this in vanilla 1.8.x I believe that you will not fall off the wall so this is some sort of collision/offset issue. It may even be a result of my collision change code perhaps check if reverting that stops the flagging.

[FlorianMichael]

Either that or it's just the same as the "Sprinting against Walls" flags the player. Since Mojang changed the block collision ticking logic multiple times in the last few updates... Exterminate ***@***.***> schrieb am Di., 19. Aug. 2025, 01:12:

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*Exterminate5573* left a comment (ViaVersion/ViaFabricPlus#860) <#860 (comment)> Not flag and probably fall off Please test this in vanilla 1.8.x I believe that you will not fall off the wall so this is some sort of collision/offset issue. It may even be a result of my collision change code perhaps check if reverting that stops the flagging. — Reply to this email directly, view it on GitHub <#860 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOKAS72SCTAF6JV36EF5KMD3OJMWDAVCNFSM6AAAAACD63M5MGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTCOJYGY4DOMJVG4> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Exterminate5573]

This is a Grim issue not a VFP issue. I replicated the flag on 1.8.9.

[FlorianMichael]

@Exterminate5573 Please send the a video of that, I can't confirm.

[Exterminate5573]

@FlorianMichael This is what I was able to recreate, if you flagged in a different way could you elaborate?
https://youtu.be/cIPM3fxGWUg

[FlorianMichael]

Will look at that when I get home later Exterminate ***@***.***> schrieb am Do., 21. Aug. 2025, 10:50:

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*Exterminate5573* left a comment (ViaVersion/ViaFabricPlus#860) <#860 (comment)> @FlorianMichael <https://github.com/FlorianMichael> This is what I was able to recreate, if you flagged in a different way could you elaborate? https://youtu.be/cIPM3fxGWUg — Reply to this email directly, view it on GitHub <#860 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOKAS7Y4GQFIDR5RZ4YP4XL3OWB4VAVCNFSM6AAAAACD63M5MGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTEMBZGYYDEOJRGQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[lowercasebtw]

Did some double checking tonight and its visible that the blockstate/model is different than it should be. Probably a VV block-connections/state mapping issue.