[BLUEJ-1350] The terminal doesn't always show when needed from the Codepad

This can be observed with the book's project examples (chapter 8 / zuul-better).

I ran a project that opens the terminal for user input. Then close the terminal (via the menu) and go to the Codepad to do System.out.println("whatever"); 

 

The terminal should reopen, but it doesn't.

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Issue metadata

• Issue type: Bug
• Priority: Medium