Use md5() instead of converting the tab name to ASCII

Fixes #12602
Resolves #12606

CHANGELOG.md

@@ -28,6 +28,7 @@
 - Fixed a MySQL error that occurred when creating a database backup using the default backup command, when running MySQL 5.7.41+ or 8.0.32+. ([#12557](https://github.com/craftcms/cms/issues/12557), [#12560](https://github.com/craftcms/cms/pull/12560))
 - Fixed a bug where database backups weren’t respecting SSL database connection settings if they were specified when using MySQL. ([#10351](https://github.com/craftcms/cms/issues/10351), [#11753](https://github.com/craftcms/cms/issues/11753), [#12596](https://github.com/craftcms/cms/pull/12596))
 - Fixed a bug where element indexes could stop showing their loading spinner prematurely if the element listing needed to be reloaded multiple times in rapid succession. ([#12595](https://github.com/craftcms/cms/issues/12595))
+- Fixed a bug where element editors wouldn’t show tabs that didn’t contain any characters that could be converted to ASCII. ([#12602](https://github.com/craftcms/cms/issues/12602))
 - Added `craft\helpers\Db::escapeForLike()`.
 - `craft\services\Assets::getAllDescendantFolders()` now has a `$withParent` argument, which can be passed `false` to omit the parent folder from the results. ([#12536](https://github.com/craftcms/cms/issues/12536))
 - Deprecated `craft\helpers\DateTimeHelper::timeZoneAbbreviation()`.

src/models/FieldLayoutTab.php

@@ -308,8 +308,9 @@ public function setElements(array $elements): void
      */
     public function getHtmlId(): string
     {
-        // Use two dashes here in case a tab name starts with “Tab”
-        return 'tab--' . StringHelper::toKebabCase(StringHelper::toAscii($this->name, 'en'));
+        // Use md5() here to ensure the result is in ASCII,
+        // even if it is solely made up of characters that can’t be converted to ASCII
+        return sprintf('tab-%s', md5($this->name));
     }
 
     /**