Handwriting - Traditional Chinese Virtual Trackpad does not appear after upgrading to Ventura

Hello.

I use Handwriting - Traditional as muy main method of inputting Traditional Chinese characters on a Mac.

Before upgrading to Ventura (from Montery), switching to Handwriting - Traditional input source will display a virtual trackpad and I can see on screen my strokes and the suggested characters.

After upgrading to Ventura, switching to Handwriting - Traditional input source either from the input menu in the status bar or the shortcut (Option + Shift + Space) will not cause the virtual trackpad to display on screen.

While I do appreciate that the suggested characters now appear on the touch bar, I do not appreciate that the option to display the virtual trackpad on screen is unavailable. Is this by design, or is it a bug?