Bubbling and non-composed events propagates outside the shadow tree

[pmdartus]

Description

Original post: Event propagation with bubble true in LWC
.

Events dispatched with { bubbles: true, composed: false } should bubble throw the shadow tree until reaching the root and should not escape outside. The following example showcases a scenario when the event keeps propagating into the parent shadow tree.

Steps to Reproduce

Playground: https://developer.salesforce.com/docs/component-library/tools/playground/S1wRP35ub/7/edit

Expected Results

handle click
handleNotifyInner in child
handleNotifyOutter in child

Actual Results

The ancestor component event listener is invoked even if the event doesn't bubble.

handle click
handleNotifyInner in child
handleNotifyOutter in child
handleNotifyOutter in parent

Browsers Affected

All

Version

• LWC: 1.1.13-224.7

[git2gus]

This issue has been linked to a new work item: W-7596701

[ravijayaramappa]

This is a duplicate of #1700

[pmdartus]

Good catch @ravijayaramappa. Let me close this one, and I will consolidate the repro step in the parent issue.