The Rail is Flying when i broke the block underneat that

Phone : Xiaomi Redmi Note 3 Pro
OS : MIUI 8 with Android 6.0.

The Rails is still fly when i broked the block underneat that. Also with This bug. U can make Flying Minecart. So please fix this. There's so many Bugs i will report. Thx

Note : U can see the Screen Shot in down Below 👇