Or I should write, macOS and Android Studio not playing well with each other.
I updated my installation of Android Studio to 3.4 and something unexpected happened almost every time I brought up the “Find action” menu (Command+Shift+A) where Terminal.app would pop up immediately after the “Find action” menu popped up.
Turns out, this was a Keyboard shortcut conflict with the latest version of macOS Mojave (https://intellij-support.jetbrains.com/hc/en-us/community/posts/360003367639-2019-1-Find-Action-shortcut-opens-terminal-securityuploadd-)
To fix the issue, you have to “Go to System Preferences | Keyboard | Shortcuts | Services and disable Search man Page Index in Terminal.”