screen shot in full screen causes unresponsive window

Describe the bug
A clear and concise description of what the bug is.

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

Hiya!
when I go to screen shot something in safari and have set to it edit in btt(easiest) it will freeze up the editor if I go to save as and put the screen shot in a new folder, then I have to force quite btt and restart it to get back up and running. I think it is because the popup window confuses the full screen deal in macOS

Screenshots
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Device information:

  • Type of Mac: 2016 mbp touchbar
  • macOS version: 10.13.5 (17F77)
  • BetterTouchTool version: 2.530

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.