Olivero dropdown not open after Drupal cache clear

Created on 17 July 2025, 18 days ago

On my installation the main menu dropdown does not always open on hover. I figured out that when Drupal cache is cleared, the menu does not expand. If I do a page reload - the dropdown opens.
If I disable CSS cache and aggregation at all - the dropdown never opens.
It seems the CSS or the JS is loaded to early?

Feature request
Status

Active

Version

11.2 🔥

Component

Olivero theme

Created by

🇩🇪Germany vistree

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Comments & Activities

  • Issue created by @vistree
  • 🇩🇪Germany vistree

    I found a possible cause for my problem: the BigPipe module.
    If BigPipe is on - the dropdown can't be expanded after clearing the cache.
    Wie BigPipe off - everything seems to be fine.

    Is this a known issue?

  • This seems to be a bug report.

  • 🇳🇿New Zealand quietone

    If this problem was discovered on a version of Drupal that is not 11.x, add that information in the issue summary and leave the version at 11.x. In Drupal core changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to the Core change policies . Thanks.

    This also needs the standard issue template so progress can be tracked.

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