Build: 1.7.1.1 3639 Mode: Survival / Creative Mode: Single Player / Multiplayer Reproducibility: Always Severity: Minor, potentially exploitable Type: Collision detection Summary: When crouched players are sometimes able to walk through thin- or half-block walls on small-block grids placed on the ground Description: While testing a concept for a deployable cover using an HV I ran into an issue where when crouching up against thin walls I would sometimes clip through them. It doesn't happen all the time and can sometimes be stopped by adding an adjacent block to the thin wall, but there are cases where it reproduces 100%. Steps to Reproduce: Load the attached HV blueprint and place it on a flat base surface. Allow it to settle with gravity. The HV consists of combinations of thin- and half-block walls in 2x3 arrangements. While standing attempt to walk through all walls by sliding back and forth along them. You should not be able to. Repeat step 2 while crouched. You will clip through all walls using thin- or half-blocks. Only the full-block wall should stop you. The room on the right is an example of how this may be exploitable. It is a completely enclosed room that can be entered by crouching and sliding along the blue wall. The video below demonstrates these steps. One additional observation: in the video I approach each wall through the empty-side of a block (the inside surface of the voxel). If you approach a wall from its outside surface it seems to be harder to clip through. Screenshots: Test framework View attachment 93836 Video demonstration
Build: 1.7.3 3649 Mode: Survival & Creative Mode: SP & MP SERVER NAME: - SEED-ID: - If applicable: MODIFIED PLAYFIELDS: Reproducibility: Always Severity: Medium (breaks immersion / POIs) Type: Block clipping bug Summary: A crouched player clips through the sliced part of the block "Cube sliced". Description: The block has a broken collision with the player, if you crouch under it coming from another block crouched or just stand up, you clip through it. Steps to Reproduce: 1) place a large block with the sliced part down 2) add another block with a similar slice to it (or the same block) 3) crouch under one of them, now crawl to the other and/or try to stand up 4) look through the structure like a god. Screenshots, Crash Logs, any other Relevant Information or Download links:
