This is an issue I discovered while using the custom joystick, which behaves as expected on playground version 4.2.1 but not on the latest Babylon version.
The joystick used to be smooth and responsive, but on the latest version is choppy and doesn’t even react to clicking in the joystick center.
Here is a playground link to the custom joystick example: https://playground.babylonjs.com/#C6V6UY#5
If you select the previous version of 4.2.1:
Clicking in the center of the joystick will produce a colored filled circle, a “puck”, as the code says. You can drag your pointer anywhere inside the large circle and the puck will immediately follow your pointer movement.
Now select the current version of 5.18.0:
Clicking in the center of the joystick does NOT create a “puck”. Only clicking in the outer circle creates a puck. Drag your pointer around and you’ll notice that the puck does not immediately follow your pointer but seems to be stuck in place until it snaps in place with a delay.