confirmed bug in incementing variables???

We are having problems with variable not incrementing correctly. Had been confirmed on 2 vex brains.

It starts at zero and adds 1 per second. This value gets displayed to the screen.

It goes
0
1
2
3
4
5
6
7
8
9
10
11
12
12.999
13.999
15

The series then bounces back and forth from .999 to .000 about every 5 loops of the code.

9b7e04d914dc01c07138f486054e3e82.png