The fire tower charge effect is not working correctly on iOS. This was tested with an iPhone6S_6240 OS: 9.3.2
Does not occur on Android. Tested on Galaxy S7
Result: The fire tower light is always fully lit and does not change
Expected: The fire tower is supposed to be unlit and then gradually change to lit as it is held down
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-34882 in the post.