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After upgrading to 16.04, when I type into a javascript text field like this search field, every keystroke erases the one before it. I've also noticed subtly different behaviour in the location bar; matching URLs are no longer pre-selected until I cursor down.

I have removed my entire ~/.mozilla directory, purged firefox* (and manually deleted all the hanging firefox files in /etc and /usr/lib).

Even after what should be a completely fresh install of Firefox 49.0 (and a short try with an early v48 build), the problem persists. The only way I can make the behaviour stop is to disable javascript in about:config.

Possibly related: when I attempted to post this question with Firefox, the post hung, and I got an error from StackExchange about an unusually high number of requests.

Anyone else seeing anything similar? What else can I try?

UPDATE:

It's more than just Firefox. All gecko-based applications seem to be misinterpreting keyboard input, as was Eclipse. I suspect keystrokes were going to the wrong windows, somehow.

Autumn
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4 Answers4

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A better workaround is to disable IBus, as described at the bottom of this thread https://bugs.launchpad.net/unity/+bug/1484157

As said on the ubuntu-fr forum, you could avoid the bug by going in system option ▸ languages ▸ Input keyboard system and selecting an option other than IBus. (https://forum.ubuntu-fr.org/viewtopic.php?id=2020851)

Andrzej Szombierski
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Alt-Gr key not working properly on Firefox

The solution is, to activate the checkbox Prevent accessibility services from accessing your browser in Firefox settings under Privacy & Security -> Permissions

Kare
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I had the same issue and deleting ~/.config/dconf solved it.

Guest
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Well, after a week of fiddling, I gave up and deleted ~/.config. That fixed my specific problem, but it sure would've been nice to actually solve the problem. Marking solved, but if you figure it out, please post a new answer.

Autumn
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