Real simple… in the editor when vim mode is enabled the / and ? search commands do not work. Also, the command prompt : is broken as well.
Help!
[edit] One thing I noticed is searching with * works. The word under the cursor is highlighted and I can search for next/prev with n and N respectively. An annoying thing is there is no way to remove the highlighting (normally with :nohlsearch). The highlighting can only be removed with closing the pane.