User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36 Steps to reproduce: Open firefox 38 or above, in Debian 8 Go to some site like www.messenger.com Type something with ibus method, like pinyin. Try to Backspace. Nothing happen, blink a little or so. Switch back to US Keyboard, Works again. Actual results: Nothing happen when use backspace in some website like messenger.com. using ibus input method like pinyin Expected results: you just type, and everything work with every input method of your choice, just like any other software on the system
Component: Untriaged → Widget: Gtk
Product: Firefox → Core
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