Environment

Vuetify Version: 3.9.0
Last working version: 3.8.12
Vue Version: 3.5.17
Browsers: Firefox 140.0
OS: Linux x86_64

Steps to reproduce

1. Click on the expand icon for "Applications"
2. Click on "WebStorm"

Expected Behavior

• Only the "WebStorm" item is displayed as activated
• The activated ref only contains the ID 4

Actual Behavior

• Both "Applications" and "Webstorm" are displayed as activated
• The activated ref only contains the ID 4

Reproduction Link

https://play.vuetifyjs.com/#...

Other comments

Even more issues related to activatable VTreeviews seem to exist.

For example, the documentation of open-on-click states that "when using this prop with activatable you will be unable to mark nodes with children as active." However, this does no longer seem to be true.