1.18.2 In module version 5.5.1, the fuse cannot explode at the correct distance, for example, I set the detonation distance of the proximity fuse to 5, 6, 9 tiles and other tiles and load the grenade projectile, when the anti-aircraft shell is launched, the proximity fuse will always explode when it collides with the target, and the delayed bump fuse cannot be detonated, and the armor-piercing grenade cannot be detonated

When a shell is deflected or hit, it does not despawn, but instead duplicates one and bounces or passes through, even if the ammunition fuse is detonated

Since version 0.5.4, the fuse is no longer able to be detonated by physical creatures, whether it is a bug or something updated

AP shell can only use timed fuze by default
Autocannon AP cannot be fuzed
Delayed impact fuze is interesting, send a video
Please send a video of the duplicating round issue
Please send a video of entities not triggering fuzes

Also, proximity fuze is a somewhat known issue, but i've largely decided that it's not the most important right now. May check on that for 5.6.0 or so

And finally, proximity fuze is intended to detonate when colliding with target.

Actually, if you're using a nightly version those may not work. Make sure you're using the version from CurseForge, so please send a modlist

Found the impact issue.

Fixed in #653. Not in production yet.