I've noticed an issue in many modded instances where nuclear bombs will not explode, even when a remote detonator is used on them, unless the player is within just a few blocks of them. Unsure if this is tied to another mod being incompatible or not. When lit, the bomb will expand, but as it shrinks, it will just repeatedly shrink and then suddenly snap back to its initial size before shrinking, looping unless I get close enough.

Edit: I can now confirm that it's most likely some sort of mod conflict, as I made a lighter pack with similar mods that doesn't have this issue.