That is a really complete bug report - very well done!!!
Can you check what :verbose imap <tab> and :verbos imap <c-j> give you? UltiSnips only ever takes one hotkey, but maybe ycm (youcompleteme) or some other plugin take the tab key and forward to ultisnips.
That is a really complete bug report - very well done!!!
Can you check what :verbose imap <tab> and :verbos imap <c-j> give you? UltiSnips only ever takes one hotkey, but maybe ycm (youcompleteme) or some other plugin take the tab key and forward to ultisnips.