TieredMenu: Submenus in popup do not appear on hover.

[ryankugel]

Describe the bug

In past version of PrimeNG, submenus in popups were shown immediately when hovering over an item when using autoDisplay. This bug was introduced in PrimeNG 16.1.0. #13582 reported this bug, and a fix was made in #13593, but it does not appear to have fixed the problem.

This is due to to checking this.dirty in onItemMouseEnter(). When the popup is initially shown, this.dirty is false, so onItemChange(event) is not called until an item is clicked.

A potential solution for this bug is to update the show() function to set this.dirty to true if popup & autoDisplay are both true.

Environment

N/A

Reproducer

See below

Angular version

16.2.0

PrimeNG version

16.5.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

16.16.0

Browser(s)

All

Steps to reproduce the behavior

Use PrimeNG's showcase for the TieredMenu: https://primeng.org/tieredmenu

1. In the Popup section, click the Show button.
2. Hover over the items in the root menu, like "File" & "Edit" and note that their submenus do not show.

Expected behavior

Submenus should immediately appear when hovering over an item when popup and autoDisplay are set to true.

[ginger7890]

Hello,

We are having the same problem.

It seems this behavior depends on Window's "touch screen" feature.

Submenu pops up on mouse over when "touch screen" feature is enabled.

Submenu does not pop up on mouse over when "touch screen" feature is disabled.

For PCs without touch screens, the sub menu does not pop up on mouse over.

I have checked with five colleagues and this seems to be affecting the behavior.

We would like for the sub menu to pop up on mouse over as well even when "touch screen" feature is not available.

[WienemannCC]

We are experiencing the same Issue.

[bjsawyer]

I've opened a PR based on @kubedan 's suggestion here #16077

[DerekBolger]

Hi guys just to let you know, this issue also exists for the Menubar Component on your latest stable release. Tested by multiple people in the office using different variants of Microsoft Surface Books and Surface Book laptops (when touchscreen is enabled).

When hovering on a menu item with dropdown sub menu's wont appear.