Step to reproduce:
- Open Hotkey editor
- Select "privatechat"
- Unset value
- Save
Result:
ERROR: Errors executing script event "Press"
ERROR: JavaScript error: gui/hotkeys/HotkeysPage.js line 171
keymap.join is not a function
saveUserHotkeys@gui/hotkeys/HotkeysPage.js:171:15 HotkeysPage/this.saveButton.onPress@gui/hotkeys/HotkeysPage.js:23:9