RTL Editor Input for Persian (fa-IR) - Cursor starts from left instead of right

[aminkaboli55-a11y]

Hi Univer team! 👋

I'm using Univer v0.12.3 with Persian (fa-IR) locale and facing an RTL issue in the cell editor.

Current Behavior

• ✅ Display mode (when cell is NOT selected): Text appears right-aligned correctly
• ❌ Editor mode (when typing/editing): Cursor starts from the left side

Configuration Applied

// Locale
locale: LocaleType.FA_IR,
locales: { [LocaleType.FA_IR]: mergeLocales(...) }

// Sheet config
sheets: {
  'sheet-01': {
    rightToLeft: 1,
    // ...
  }
}

// Cell styles  
cellData: {
  0: {
    0: { v: 'نام محصول', s: { ht: 3 } } // ht: 3 = right align
  }
}



Also Tried
Added dir="rtl" to HTML container
Applied CSS rules (but I understand Univer uses Canvas rendering)
Question
Is there a specific configuration needed to make the cell editor start input from the right side for RTL languages?

Expected Behavior
When clicking on a cell with RTL content, the cursor should start from the right side and text should flow right-to-left during typing.

Environment
Univer version: 0.12.3
Framework: Angular 21
Locale: fa-IR (Persian)
Thanks for your help! 🙏

[jikkai]

Sorry, RTL hasn’t been implemented yet #2094