Hindi IME composition cancelled by paste operation in Chrome
OS: Windows 11 · Device: Desktop or Laptop Any · Browser: Chrome 120.0
Open case →Scenario
Paste during IME composition cancels or corrupts composition
Pasting from the clipboard while IME composition is active may cancel the composition session, replace the wrong range, or interleave pasted text with unfinished syllables—Firefox and Chrome show different behavior for Korean and Hindi IME paths.
ime
Scenario ID
scenario-ime-composition-paste
Details
Pasting from the clipboard while IME composition is active may cancel the composition session, replace the wrong range, or interleave pasted text with unfinished syllables—Firefox and Chrome show different behavior for Korean and Hindi IME paths.
Problem Overview
Paste generates beforeinput / input with insertFromPaste; composition may still be active (isComposing true), producing undefined ordering relative to compositionend.
Observed Behavior
- Korean IME + Firefox: paste cancels composition (see cases).
- Hindi IME + Chrome: paste disrupts Devanagari composition.
Impact
Lost composing text, mixed scripts, or duplicate fragments.
Solutions
- Defer non-text clipboard handling until
compositionendwhen feasible. - Validate selection after paste if IME was active.
Related Cases
References
Scenario flow
Visual view of how this scenario connects to its concrete cases and environments. Nodes can be dragged and clicked.
Variants
Each row is a concrete case for this scenario, with a dedicated document and playground.
| Case | OS | Device | Browser | Keyboard | Status |
|---|---|---|---|---|---|
| ce-0193-korean-ime-paste-cancels-firefox | Windows 11 | Desktop or Laptop Any | Firefox 120.0 | Korean (IME) | draft |
| ce-0204-hindi-ime-paste-cancels-chrome | Windows 11 | Desktop or Laptop Any | Chrome 120.0 | Hindi (IME - Devanagari) | draft |
Browser compatibility
This matrix shows which browser and OS combinations have documented cases for this scenario. Click on a cell to view the specific case.
| Browser | Windows |
|---|---|
| Chrome | |
| Firefox |
Confirmed
Draft
— No case documented
Cases
This scenario affects multiple languages. Cases are grouped by language/input method below.
Hindi/Devanagari
1 caseKorean
1 caseKorean IME composition cancelled by paste operation in Firefox
OS: Windows 11 · Device: Desktop or Laptop Any · Browser: Firefox 120.0
Open case →Related Scenarios
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Comments & Discussion
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