Quick answer: Sort with a locale-aware collator (Intl.Collator, CultureInfo.CompareInfo, ICU) so accents, case and special letters order according to the active language.
Code-point sorting puts Z before a-with-accent and ignores rules like Swedish placing certain letters at the end. A locale collator sorts correctly. Here is how.
How to fix it
1. Sort with a locale collator
Compare strings with Intl.Collator(locale).compare or your platform's culture-aware comparer so accented and cased letters sort by the locale's alphabet rather than raw bytes.
2. Respect language-specific ordering
Some languages treat digraphs or accented letters as distinct positions; a proper collator handles these, so do not hand-roll an ASCII comparison for player-facing lists.
3. Separate display sort from stable keys
Sort by the localized collation for display but keep an internal stable identifier for equality and persistence, so re-sorting on language change never corrupts your data.
Catching the ones you can't reproduce
The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.
Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.
This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.
Reproduce it once with full context and the fix writes itself. The hunt is the expensive part.