Dear Maintainer,

In the Keyboard Settings dialog, if the "Change layout option" is set
to (say) "Both Alt together", then the right Alt key stops working in
applications.

To reproduce:

* Set "Change layout option" to "Both Alt together"
* Open xev
* Press left Alt; result is "Alt_L"
* Press right Alt; result is "ISO_Level3_Shift"
* Set "Change layout option" to "-" (disabled)
* Press right Alt in xev window; result is "Alt_R"

My other keyboard layout options are:

Keyboard model: "Generic 105-key PC (intl.)"
Compose key: "Menu"
Keyboard layout: English (US) -> English (Dvorak) [selected]
 Hebrew -> Hebrew (Biblical, Tiro) [alternate]

I also use 'setxkbmap -option ctrl:nocaps', which there is no current
setting for.