running into the same issue. Flashed a new tune and the abs/trac light comes on. The previous tune did not have the issue, I even reflashed back to the previous and the light's still on.
https://datazap.me/u/soloside/log-15....02&tmax=20.33
Here's 2 logs. One is right after the flash driving. The other was me waiting about 3 hours and the car actually shut off.