SplitPane visual glitch in Tahoe

[claudiobosticco]

SmartClient Version: v11.1p_2017-08-27/Enterprise Development Only (built 2017-08-27)

Chrome on OSX

Hello, please see the #layoutSplitPane sample, you'll see extra borders in the navigationBar.titleLabel and in the listTitleLabel:

[Isomorphic]

The extraneous borders have been removed starting with builds Aug 29 or later.