Drawings make solid square even with Opacity at 0

Describe the bug

I'm getting a solid rectangle (a drawing area) even when the background color opacity is set to 0

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):

Normal mouse

Screenshots
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Device information:

  • Type of Mac: iMac 5k 2015
  • macOS version: 10.14.3
  • BetterTouchTool version: 2.728

Additional information (e.g. StackTraces, related issues, screenshots, workarounds, etc.):

Note: Before bug reporting, please make sure you have the latest version of BetterTouchTool and that you have already tried to restart your system :-). If you encounter a crash, please attach a crash log from the macOS Console.app from the "User Diagnostic Reports" section.

Thanks for reporting! Will be fixed with the next alpha later today.