In /etc/vim/vimrc from app-editors/vim-core Q is mapped to gq: " Don't use Ex mode, use Q for formatting map Q gq Reproducible: Always Steps to Reproduce: 1. Start vim 2. Press Q to switch to Ex mode 3. Cry Actual Results: After a few seconds of confusion i saw "gq" in my status line, since I set showcmd in my ~/.vimrc (this is not default, using just the vimrc provided by app-editors/vim-core wouldn't give you a clue). Expected Results: I expected to enter Ex mode, ofcourse. That's what :help Q says it will do :)
Users who require the Ex mode functionality will know what to change. For general use the map from Q to gq mimics older behaviour and will maintain familiarity for the majority of users. Suggest -> invalid.
Closing this as WONTFIX, as the Q mapping is consistent with what upstream recommends and what everyone else does.