Late draw on cmdline

Hi,
I have
"""
nnoremap <silent> <leader>t :tabnew<Space>
"""
in my keybindings. However, from what I have seen, what I press
<leader>t it doesn't update the cmdline unless I press Space again
or type something. I disabled lazy redraw thinking that may
responsible for this. But that doesn't seem to be helping. Any ideas
why ?
--------------------------
Raghavendra Prabhu
GPG Id : D72BE977
Fingerprint: B93F EBCB 8E05 7039 CD3C A4B8 A616 DCA1 D72B E977