The Qt virtual keyboard's Caps Lock is not functioning as expected in the following scenario. When the Caps Lock button is double-clicked, the keyboard should lock for uppercase letters. However, this does not occur if the keyboard is already opened with uppercase letters.

Non-working scenario:

1. Open the keyboard; it opens with uppercase letters initially.
2. Double-click on the Caps Lock button.

Expected result: The keyboard should lock with uppercase letters upon double-clicking.

It is observed that three clicks are needed to lock the keyboard with uppercase letters.

If the keyboard is opened with lowercase letters, double-clicking the Caps Lock button locks the keyboard to uppercase as expected. The issue primarily occurs when the keyboard is opened with uppercase letters.

I have attached an example project to reproduce this issue.