synapse used the same source of foreground window

[CzBiX]

I'm Ubuntu 14.04, Synapse 0.2.99
When I called Synapse when foreground window with IBus enabled,
Synapse just use my current input source, and do not respect my settings in "Text Entry" of System Settings.

I used English as default input source, and Chinese for chatting, searching, writting, etc.
So my settings is "Allow different sources for each window, New windows use the default source".

Now I had to switch to English input source int first, then call Synapse for search. It's not well for me.

[CzBiX (gliuwr)]

Test in Ubuntu 15.04 and works well.