Korean tests: "Failed to save result: Result data doesn't make sense"

[eXConf]

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• I have cleared my cache

Is there an existing issue for this?

• I have searched the existing open and closed issues

Does the issue happen when logged in?

Yes

Does the issue happen when logged out?

No

Does the issue happen in incognito mode when logged in?

Yes

Does the issue happen in incognito mode when logged out?

No

Account name

eXConf

Account config

{"theme":"serika_dark","themeLight":"serika","themeDark":"serika_dark","autoSwitchTheme":false,"customTheme":false,"customThemeColors":["#323437","#e2b714","#e2b714","#646669","#2c2e31","#d1d0c5","#ca4754","#7e2a33","#ca4754","#7e2a33"],"favThemes":[],"showKeyTips":true,"smoothCaret":"medium","codeUnindentOnBackspace":false,"quickRestart":"off","punctuation":false,"numbers":false,"words":10,"time":30,"mode":"quote","quoteLength":[1],"language":"korean","fontSize":2,"freedomMode":false,"difficulty":"normal","blindMode":false,"quickEnd":false,"caretStyle":"default","paceCaretStyle":"default","flipTestColors":false,"layout":"default","funbox":[],"confidenceMode":"off","indicateTypos":"off","compositionDisplay":"replace","timerStyle":"mini","liveSpeedStyle":"off","liveAccStyle":"off","liveBurstStyle":"off","colorfulMode":false,"randomTheme":"off","timerColor":"main","timerOpacity":"1","stopOnError":"off","showAllLines":false,"keymapMode":"off","keymapStyle":"staggered","keymapLegendStyle":"lowercase","keymapLayout":"overrideSync","keymapKeys":"minimal","keymapSize":1,"fontFamily":"Roboto_Mono","smoothLineScroll":false,"alwaysShowDecimalPlaces":false,"alwaysShowWordsHistory":false,"singleListCommandLine":"on","capsLockWarning":true,"playSoundOnError":"4","playSoundOnClick":"5","soundVolume":0.5,"startGraphsAtZero":true,"showOutOfFocusWarning":true,"paceCaret":"off","paceCaretCustomSpeed":100,"repeatedPace":true,"accountChart":["on","on","on","on"],"minWpm":"off","minWpmCustomSpeed":100,"highlightMode":"letter","typedEffect":"keep","typingSpeedUnit":"wpm","ads":"result","hideExtraLetters":false,"strictSpace":false,"minAcc":"off","minAccCustom":90,"monkey":false,"repeatQuotes":"off","resultSaving":true,"oppositeShiftMode":"off","customBackground":"","customBackgroundSize":"cover","customBackgroundFilter":[0,1,1,1],"customLayoutfluid":["qwerty","dvorak","colemak"],"customPolyglot":["english","spanish","french","german"],"monkeyPowerLevel":"off","minBurst":"off","minBurstCustomSpeed":100,"burstHeatmap":false,"britishEnglish":false,"lazyMode":false,"showAverage":"off","showPb":false,"tapeMode":"off","tapeMargin":50,"maxLineWidth":0,"playTimeWarning":"off"}

Current Behavior

Results of tests in Korean are not saved

Expected Behavior

Results of tests should be saved

Steps To Reproduce

1. Go to main page
2. Change language to Korean, type to time, words or quote
3. Complete test
4. Watch results failed to be saved

Environment

• OS: Debian 13; NixOS 26.05
• Browser: Brave
• Browser Version: Brave 1.92.139 (Official Build) (64-bit) (Chromium: 150.0.7871.114); Brave 1.91.180 (Official Build) (64-bit) (Chromium: 149.0.7827.201)

Anything else?

There is a similar but closed issue: #8143

Whenever I complete a test in Korean, an error appears: "Failed to save result: Result data doesn't make sense". Other languages work just fine (tested English, French, Ukrainian). The problem persists on a new account and a different device as well.

The browser console says this:

Failed to load resource: the server responded with a status of 463 ()
logger.ts:48 ERR POST https://api.monkeytype.com/results failed Object

And here is the object itself in case it will be helpful:

{
    "wpm": 28.73,
    "rawWpm": 28.73,
    "charStats": [
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    "charTotal": 141,
    "acc": 98.57,
    "language": "korean",
    "testDuration": 58.9,
    "lastKeyToEnd": 0.3,
    "startToFirstKey": 0,
    "afkDuration": 21,
    "quoteLength": 1,
    "tags": [],
    "punctuation": false,
    "numbers": false,
    "lazyMode": false,
    "timestamp": 1783782362291,
    "mode": "quote",
    "mode2": "18",
    "bailedOut": false,
    "funbox": [],
    "difficulty": "normal",
    "blindMode": false,
    "stopOnLetter": false,
    "restartCount": 0,
    "incompleteTests": [],
    "incompleteTestSeconds": 0,
    "consistency": 10.04,
    "wpmConsistency": 72.61,
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}