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Firefox/NVDA: ENTER on button opens browser context menu


From: Detlev Fischer
Date: Sep 19, 2018 6:18AM


I have a problem when testing accessibility in Firefox that is driving
me to distraction - I hope someone has an answer.
My device: Windows 10 on recent touch-enabled hybrid laptop with
external montor.

The problem:
When I use Firefox (62.0) and turn on NVDA (2018.3, default settings),
native buttons that reacted on ENTER before turning on NVDA (e.g. open a
drop-down) stop working: I now get the browser context menu displayed
instead. Buttons work when I press ALT at the same time, but that should
not be necessary. My colleagues with different devices cannot reproduce
the problem in Firefox/NVDA.

This is what I have tried:

- Search Webaim mail archives and the web to find an answer
- In Firefox' about:config settings, set dom.event.contextmenu.enabled
- In the device settings > Human Interface Devices, deactivating HID
conformant touchscreen
- Turning Firefox Caret browsing (F7) on and off

Nothing seems to have an effect on the problem.
Has anyone got an idea what is happening here?


Detlev Fischer
Werderstr. 34, 20144 Hamburg

Mobil +49 (0)157 57 57 57 45

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