About auto-resizing controls in a dialog

If I create a dialog like the example below, whenever I change the content of a markup control that's set to "auto-fit" to text, the controls above end up looking cut off if the markup control grows vertically. Is this a bug, or am I doing something wrong?
dlgtest.opusscriptinstall (2.3 KB)

The example is very small and easy to reproduce.

How can I make all the controls (including those inside subdialogs in a Tab control) resize and reposition themselves accordingly?

Thanks.

That combination of controls, layout and resizing modes isn't currently supported, but we'll see if we can make it work.