VSCode live-preview can lead to crashing Desktop Enviroment

[Vollbrecht]

Description

Live editing "width" values with relative length can lead to uncontrollable window growth. This uncontrollable growth crashes Gnome on Debian

Expectation

Arbitrary Values in width / height should not crate a situation (on live edit) that gets uncontrollable.

Behavior

Typing the wrong value on edit leads to an instantaneous not responsible DE.
Example that creates the issue.

export AppWindow := Window {
    VerticalBox{
        HorizontalLayout {
            alignment: end;
            Rectangle {
                width: parent.width * 80%; 
                horizontal-stretch: 0.2;
             }
            GridLayout {
                width: parent.width * 20%;
                horizontal-stretch:0.2;
                Row {
                    Button {
                        width: 80px;
                        height: 80px;
                                ....
                        }
                    }                  
                 
            }
        }
    }
}

Software version

sixtyfps master/ 75ba29c
sixtyfps-vscode nightly v2021.12.2818

Operating System

Linux 5.10.0-8-amd64 -- Debian11

DE

GNOME 3.38.6

[ogoffart]

I have noticed such problems myself before.
I'm not sure how to mitigate them. Maybe limmiting the window size to some value?
Or detecting the binding loop in this case even if that's technicly not a binding loop?

[ogoffart]

This is fixed for the live preview since we have a new UI.
Although the root cause is still there, but tracked in #2902