My computer with Lubuntu 14.04 32 bits has got the IBus icon in the taskbar, but it does not look like that. I can make a right click on it and ask it not to appear.
You can also check the autostart application in "default applications for LXSession" in the preferences sub-menu. You might solve this by disabling that "known application" in the autostart tab.
Anyway, Lubuntu 14.04 has already been released.
PS: I am aware that Ubuntu 14.04.1 has already been released, but I cannot find any single piece of news of Lubuntu 14.04.1 at www.lubuntu.net. However, it is true that lsb_release command shows that my computer is running Ubuntu 14.04.1. Any improvement in my poor message will be welcome.