Our update to version 4.3.1 introduces a new feature "Capture+Do". It allows you to take a screenshot and immediately post it in your Slack or Trello. We decided to use a 'cmd+shift+7' hotkey, but apparently it's conflicting with Google Docs or code editors like Sublime Text.
Since that combo is hardcoded, please remove the 4.3.1 and install 4.3.2 Beta which allows you to record your own combination in Preferences -> Shortcuts:
Here is a link to download our beta. https://cl.ly/3s0Z1c303W18. We will have a new version available soon.
Shortcut settings in 4.3.2 Beta