Add impulse BP node doesn't work for 'standalone game' PIE/shipping build? (possible bug?)

I’ve discovered an issue in my project (engine v4.7.3), where I have an ‘add impulse at location’ node run on an enemy when I interact with it, which works perfectly fine when playing it in the ‘selected viewport’ or ‘new editor window’, however when playing it in ‘standalone game’ or making a shipping build of it the impulse no longer works at all. Collision still works between the player and the enemies, I’ve run multiple tests with printing text to the screen to confirm that the interactions with the enemy should be correct and the impulse location and impulse strength values are correct, however for some reason it just isn’t working and I have no idea what could be causing this.
If you know of some discreet option somewhere I may require ticking to enable impulse/physics in built projects or what may be causing this I’d greatly appreciate the help otherwise this may be a very frustrating bug to currently exist?