After updating from Drupal 10.3 to 10.4 this error emerged:
User warning: Trying to overwrite a cache redirect with one that has nothing in common, old one at address "languages:language_interface, theme, user.permissions" was pointing to "url.path.parent, url.path.is_front, route", new one points to "url.path, languages:language_url". in Drupal\Core\Cache\VariationCache->set() (line 138 of core/lib/Drupal/Core/Cache/VariationCache.php).
No other actions beyond the update.
Apparently the cache context in the BreadcrumbBuilder needs to be enhanced. At least this appears to solve the problem in my case.
In BreadcrumbBuilder.php line 227 this row
$breadcrumb->addCacheContexts(['url.path']);
needs to be replaced by this:
$breadcrumb->addCacheContexts([
'url.path',
'languages:language_url',
'languages:language_interface',
'theme',
'user.permissions',
'url.path.parent',
'url.path.is_front',
'route'
]);Review suggestion and update the code.
Active
1.1
Code
mark.labrecque → made their first commit to this issue’s fork.
laura.j.johnson@gmail.com → made their first commit to this issue’s fork.
The proposed resolution works, but you can also modify based on menu_breadcrumb's merge request that uses Drupal Core's CacheableMetadata.