Problem with LOOP statement

Panorama X Beta 10.2
8

Following up on the bug report aspect of this thread, it looks like every 32nd time through the loop, the first statement in the loop is executed twice. If I make that statement a NOP, the results are correct.

let Z=""
let n=6  //first number of the array
loop
    nop
    Z=Z+","+n
    n=n+1
    stoploopif n=100
endloop
Z=Z[2,-1]  // gets rid of the leading comma
Increment Loop Failure