PyScript components become unresponsive on exceptions

[Archmonger]

Current Situation

If an exception is thrown in the component body of a PyScript component, the component's become unresponsive. This can be demonstrated by using the following pyscript component

from reactpy import component, hooks, html

@component
def root():
    count, set_count = hooks.use_state(0)

    def increment(event):
        set_count(count + 1)

    if count == 5:
        raise ValueError("This error both breaks this component's rendering stack, and does not hide the component.")

    return html.div(
        html.button({"onClick": increment}, "Increment"),
        html.p(f"Count: {count}"),
    )

This is strange since layout.py defines that components should hide themselves when exceptions occur, and that's clearly not happening.

Something notable is that this issue only occurs if the exception occurs in the root component. The expected behavior will occur if the exception happens in any child components. For example...

@component
def root():
    return html.fragment(
        counter(),
        counter(),
    )


@component
def counter():
    count, set_count = hooks.use_state(0)

    def increment(event):
        set_count(count + 1)

    if count == 5:
        raise ValueError("This is an error 2")

    return html.div(
        html.button({"onClick": increment}, "Increment"),
        html.p(f"PyScript Count: {count}"),
    )

Proposed Actions

Figure out why this behavior exists. Perhaps it also exists in server-side components and we just haven't noticed until now?