On latest version of Mojave beta, buttons can't be colored anymore

Describe the bug
After updating to OSX Mojave 10.14 Beta (18A347e) this morning, from the previous beta version, the touch bar got a few changes:

  • The margins between buttons seem to have been reduced
  • Colored buttons are back to their default grey background, and changing colors in BetterTouchTool doesn't seem to do anything anymore

Affected input device:

MacBook Touch Bar


Device information:

  • Type of Mac: MacBook Pro 15 inch 2017
  • macOS version: macOS Mojave 10.14 Beta (18A347e)
  • BetterTouchTool version: 2.536

Additional information:


See BTT Button Background Colors Broken In Mojave 10.14 DP5 (unfortunately Apple will need to fix this)