Controls in Container exceeding maximum width

[henkenTech]

Hi all,

hope you are all well 😊 I'm probably just missing something small, but I am facing a problem with containers:

In this setup, the "Progress" component (blue bar at the top) looks fine in edit and preview mode, but when playing the app ends up much wider than it should be and goes off the screen:

In Edit and Preview mode:

When played:

I added some labels to be able to see what the issue might be and it looks like the containers are scaling properly, but the App.Width and the mainContainer.Width are fixed at 1366. The app setting are set to Scale to fit.

Any ideas....?

Max