Cmd + Tab doesn't work while using BTT

Describe the bug
While using BTT(open Configuration, Edit screenshot), default shortcut key Cmd + Tab to switch app doesn't work.

Device information:

  • Type of Mac: Macbook pro 15' 2015
  • macOS version: 10.14.5
  • BetterTouchTool version: 3.209(1386)

No help here, but fyi: I haven't experienced any issues with cmd-tab on either of three different MacBooks, both Mojave and Catalina. I also use Witch to customize cmd-tab behavior, and it's worked properly, too.