Enderpearl in to nest, dig straight up/down, you came out 10x the coords you went in.
Repeat couple times, you are now ~5M blocks out of spawn.
Went in/out ~5 times, im at 29999977, 80, 29999968.

fudge. I see the math error I made. That definitely getting a quick patch lmao.

Ok. v1.0.2 is now available and fixes this big bug. Thank you so much for reporting it! I have no clue how despite my testing, this buggy bug slipped under my radar.