TNT can be activated with Fire Aspect sword

Tapping on TNT with any sword enchanted with fire aspect makes the TNT activate.

Steps to Reproduce:

-enchant any sword with fire aspect

-place one TNT on the ground

-tap the TNT using the fire aspect sword (or right click in Windows 10)

-the TNT will ignite (in PE)

I've checked the wiki just in case it was an exclusive feature but nothing there says that it can be activated using a sword. 

I discovered this in my survival world while decorating using TNT (great idea) and accidentally tapped it with my fire aspect sword. Then I tested it in a creative world and had the same results.