How to Fix Unreal Crouch Not Shrinking the Capsule and Blocking Low Passages

In Unreal, Crouch lowering only the view but not the capsule means the crouched half-height was never set. Configure it on the movement component. Here is how.

How to fix it

1. Set CrouchedHalfHeight

On the CharacterMovementComponent, set CrouchedHalfHeight to the desired crouched capsule size. Crouch() resizes the capsule to this value; without it the capsule stays at standing height.

2. Enable crouching

Make sure NavAgentProps.bCanCrouch (Can Crouch) is true. If it is disabled, Crouch() is ignored entirely and nothing resizes.

3. Rely on UnCrouch clearance checks

Unreal already prevents uncrouching under low ceilings via its overlap test; let it keep the character crouched until there is headroom rather than forcing a stand that clips geometry.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every Unreal Engine error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.