Naviagtion delay in _startOpening not working in magento 2.3.5-p1

[stkrelax]

Preconditions (*)

1. magento 2.3.5-p1
2. changed topmenu.phtml --> "delay":300 added

<nav class="navigation bla" data-action="navigation">
    <ul data-mage-init='{"menu":{"responsive":true, "delay":300, "expanded":true, "position":{"my":"left top","at":"left bottom"}}}'>
        <?= /* @noEscape */ $_menuHtml?>
        <?= $block->getChildHtml() ?>
    </ul>
</nav>

Steps to reproduce (*)

1. open menu via mouse over
2. close menu via mouse leave

Expected result (*)

1. _startOpening method uses delay
2. _close uses delay

Actual result (*)

1. _startOpening does not use delay anymore
2. _close uses delay as provided

Reason

this commit
747846e

from this "fixed" issue
#25589

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• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @stkrelax. Thank you for your report.
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• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

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---

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[nkajic]

Hi @stkrelax thank you so much for reporting this reference - it saved me additional time debugging root cause to this problem.

We also had same problem and it was making menu user un-friendly since since it was missing this delay.

Here is reference how pure jquery menu should act with delay on showing submenu. https://jqueryui.com/menu/ Two different worlds.

Removing delay entirely was definitely not the right solution to fix it #25589

Reproduced on 2.4-develop

[stkrelax]

@nkajic you're welcome ;)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 14 days if no further activity occurs. Is this issue still relevant? If so, what is blocking it? Is there anything you can do to help move it forward? Thank you for your contributions!