sway occassionally gets confused which keyboard layout should be used with which keyboard for xwayland Apps

[sanga]

I have my laptop connected though a thunderbolt dock to an external keyboard. My internal laptop is a finnish layout kb and the external one is a en-us layout kb. Sometimes it appears that sway gets confused and behaves as if the external keyboard was set to fi-fi layout. Hitting any key on my laptop keyboard will then "remind" sway that the external kb is in en-us layout. Also, it would appear that this bug only happens for xwayland apps.

swaymsg -t get_inputs (snipped out irrelevant stuff):

   {
     "identifier": "1241:17733:USB_Keyboard_System_Control",
     "name": "USB Keyboard System Control",
     "vendor": 1241,
     "product": 17733,
     "type": "keyboard",
     "xkb_layout_names": [
       "English (US)"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "English (US)",
     "libinput": {
       "send_events": "enabled"
     }
   },
   {
     "identifier": "1241:17733:USB_Keyboard_Consumer_Control",
     "name": "USB Keyboard Consumer Control",
     "vendor": 1241,
     "product": 17733,
     "type": "keyboard",
     "xkb_layout_names": [
       "English (US)"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "English (US)",
     "libinput": {
       "send_events": "enabled"
     }
   },
   {
     "identifier": "1241:17733:USB_Keyboard",
     "name": "USB Keyboard",
     "vendor": 1241,
     "product": 17733,
     "type": "keyboard",
     "xkb_layout_names": [
       "English (US)"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "English (US)",
     "libinput": {
       "send_events": "enabled"
     }
   },
   {
     "identifier": "6127:12394:Lenovo_ThinkPad_Thunderbolt_3_Dock_USB_Audio",
     "name": "Lenovo ThinkPad Thunderbolt 3 Dock USB Audio",
     "vendor": 6127,
     "product": 12394,
     "type": "keyboard",
     "xkb_layout_names": [
       "English (US)"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "English (US)",
     "libinput": {
       "send_events": "enabled"
     }
   },
   {
     "identifier": "6058:20564:ThinkPad_Extra_Buttons",
     "name": "ThinkPad Extra Buttons",
     "vendor": 6058,
     "product": 20564,
     "type": "keyboard",
     "xkb_layout_names": [
       "English (US)"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "English (US)",
     "libinput": {
       "send_events": "enabled"
     }
   },
   {
     "identifier": "1:1:AT_Translated_Set_2_keyboard",
     "name": "AT Translated Set 2 keyboard",
     "vendor": 1,
     "product": 1,
     "type": "keyboard",
     "xkb_layout_names": [
       "Finnish"
     ],
     "xkb_active_layout_index": 0,
     "xkb_active_layout_name": "Finnish",
     "libinput": {
       "send_events": "enabled"
     }
   }
 ]

relevant snip from config file

input "1:1:AT_Translated_Set_2_keyboard" {
    xkb_layout fi
    xkb_options ctrl:nocaps
}

input "1241:17733:USB_Keyboard" {
    xkb_layout us
    xkb_options ctrl:nocaps
}

input "2385:5815:Kingston_HyperX_Alloy_FPS_Mechanical_Gaming_Keyboard" {
    xkb_layout fi
    xkb_options ctrl:nocaps
}

version info:

sway version 1.2-rc1-19-gff7d979d (Aug 20 2019, branch 'master')
wlroots=e19f48d1e4cea6bbb8998466553fffda4bd13251

not sure if it's relevant but libinput is at

dpkg -l | rg libinput                          
ii  libinput-bin                               1.12.6-1                             amd64        input device management and event handling library - udev quirks
ii  libinput-dev:amd64                         1.12.6-1                             amd64        input device management and event handling library - development files
ii  libinput10:amd64                           1.12.6-1                             amd64        input device management and event handling library - shared library
ii  xserver-xorg-input-libinput                0.28.2-2                             amd64        X.Org X server -- libinput input driver

Apologies, I don't have logs for this at the moment. I'll try to dig them out later.

Incidentally is seems a little odd that Lenovo_ThinkPad_Thunderbolt_3_Dock_USB_Audio is detected as a keyboard and as such has a layout. Perhaps that's not related but I included it in case it somehow is.

[bhearsum]

I'm not sure if it's the same or not, but I'm hitting something similar in #4664.