@tng
The progress bar is not “following”. It is just staying at the same position in the stage, regardless of where your sprite is or where the viewport is.
If you want the progress bar to stay with the tree, there are some other options. For example, you can add additional costumes of the tree, all with the same tree, but with an additional progress bar on top of it at different percentages. So you can change the tree’s costume in your code.
Or you can create a new sprite that’s just the progress bar at different percentages, and then move that sprite above the tree. It will stay with the tree when you move the viewport.
And another option is still use the progress bar widget, but change its position when you move the main sprite. You will need to calculate the position of the tree relative to your sprite, and calculate the position of the progress bar using that relative position.
