CMD + mouseover also has some serious problems with document-based apps. When I do it the REPL crashes with the following message:
Info Using certificate 'Mac Developer: XXXXXX'.
(main)> Assertion failed: (DataSize > 0 && DataSize < 1000000), function executeCode, file jit/RemoteTargetExternal.cpp, line 66.
The application terminated. A crash report file may have been generated by the
system, use `rake crashlog' to open it. Use `rake debug=1' to restart the app
in the debugger.
TypeError: no implicit conversion from nil to integer
/Library/RubyMotion/lib/motion/project/template/osx.rb:99:in `block in <top (required)>'
Tasks: TOP => default => run
(See full trace by running task with --trace)
Good to know that you can deactivate it