Alt_R doesn't function as an Alt key

[abstractlyZach]

When I go to the Krabby website, all commands that use Alt + ? will work when pressed with Alt_L but not Alt_R. For example, I can use Alt_L + Esc to toggle Krabby, but Alt_R + Esc is a no-op.

Here is the output of wev for debugging purposes:

[14:     wl_keyboard] key: serial: 8009; time: 8654130; key: 64; state: 1 (pressed)
                      sym: Alt_L        (65513), utf8: ''
[14:     wl_keyboard] modifiers: serial: 0; group: 0
                      depressed: 00000008: Mod1
                      latched: 00000000
                      locked: 00000000
[14:     wl_keyboard] key: serial: 8011; time: 8654209; key: 64; state: 0 (released)
                      sym: Alt_L        (65513), utf8: ''
[14:     wl_keyboard] modifiers: serial: 0; group: 0
                      depressed: 00000000
                      latched: 00000000
                      locked: 00000000
[14:     wl_keyboard] key: serial: 8013; time: 8654702; key: 108; state: 1 (pressed)
                      sym: Alt_R        (65514), utf8: ''
[14:     wl_keyboard] modifiers: serial: 0; group: 0
                      depressed: 00000008: Mod1
                      latched: 00000000
                      locked: 00000000
[14:     wl_keyboard] key: serial: 8015; time: 8654796; key: 108; state: 0 (released)
                      sym: Alt_R        (65514), utf8: ''