Toolbar alignment different on iOS11b1 with Xcode9.0b1

The toolbar alignement is different when running on iOS11b1 with either Xcode8.3.2 (with iOS10 SDK) or with Xcode9.0b1.

Is this a bug or a change in the design?

See sample projet and screenshot.

Steps to Reproduce:

-Run the sample project on an iPad with iOS11b1, compiled with Xcode8.3.3 (with iOS10 SDK), notice toolbar alignement.

-Run the sample project on same iPad with iOS11b1, compiled with Xcode9.0b1 (with iOS11 SDK), notice toolbar alignement.

Expected Results: Same alignement of toolbar.

Observed Results: Different alignement.

Version:

-macOS 10.12.5 (16F73)

-Xcode 8.3.3 (8E3004b)

-Xcode 9.0 beta (9M136h)

-iOS11.0 b1 (15A5278F)