[BLUEJ-1032] Code completion window lines resize slightly while typing

Enter some code:

{code} java.net.URL u; u. // <-- here {code}

Press ctrl+space to open code completion window. Type "o" - this will reduce the completion options to three choices: openConnection(), openConnection(Proxy), openStream(). Now type "p". The same three choices are still shown, but each line has gotten slightly less tall and the list is compressed as a result. This is only a tiny change, but it is noticeable. (Tested on Linux).

---

Issue metadata

• Issue type: Bug
• Priority: Low