Keyboard does not work in 64-bit TBB 2.3.25-10 and 3.0 when ibus is running

I'm running Tor Browser in Gentoo, ~amd64 arch. 32-bit bundle works. With 64-bit bundle I can't input any characters with keyboard.

I start start-tor-browser from terminal and no errors appear later in console.

Trac:
Username: biosh

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