Keyboard Crashes When Placeholder Popup Key Is the Only Configured Popup

[RHJihan]

The keyboard crashes when a key is configured with a placeholder as the only popup key, and the user selects only the "Layout" popup key order in settings. This occurs because the placeholder type does not have a label or associated functionality, resulting in a crash when the key is long-pressed.

Example Key Configuration

{
  "label": "ক",
  "popup": {
    "relevant": [
      {
        "type": "placeholder"
      }
    ]
  }
}

Steps to Reproduce

1. Configure a key as shown in the example above.
2. Go to the app settings and set the popup key order to "Layout" only, disabling all other options.
3. Long-press the key labeled "ক".

Expected Behavior
The key should either:

• Display no popup keys gracefully, or
• Prevent the long-press interaction entirely when no valid popup keys are available.

Actual Behavior
The keyboard crashes when the key is long-pressed due to the presence of only a placeholder popup key.

App version
Upto 35e0fe6

Device

• Model: Galaxy M32
• OS: Android 13