Comment editor crashes when writing diacritics

This issue was created automatically by a script.

Bug 1713496

Bug Reporter: @MikkCZ CC: @Pike

STR:

1. Open any string, e.g. https://pontoon.mozilla.org/cs/firefox/all-resources/?string=74127.
2. Open the comment textarea either on a suggestion or the string in general.
3. On Czech keyboard do two times: – press acute/caron key (with or without Shift), followed by e.g. E, to write either “é” or “ě” – press space bar

What should happen:

• The area should contain "é é " or "ě ě " depending on what you pressed.

What happens:

• The first time space is pressed, the letter disappears. The second time the whole frontend crashes and two errors appear in the console.

Error: Cannot resolve a DOM point from Slate point: {"path":[0,0],"offset":3}
    toDOMPoint react-editor.ts:262
    toDOMRange react-editor.ts:277
    wt editable.tsx:184
    React 3
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    onChange with-react.ts:177
    apply create-editor.ts:86
    promise callback*apply create-editor.ts:84
    apply with-react.ts:52
    insertText text.ts:448
    withoutNormalizing editor.ts:1587
    insertText text.ts:414
    insertText create-editor.ts:188
    insertText editor.ts:319
    onBeforeInput editable.tsx:498
    React 12
    unstable_runWithPriority scheduler.production.min.js:19
    React 13
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    Redux 5
    a middleware.js:22
    dispatch Redux
    r actions.js:67
    h runtime.js:63
    _invoke runtime.js:293
    S runtime.js:118
    Babel 2
react-dom.production.min.js:209:194

Uncaught (in promise) Error: Cannot resolve a DOM point from Slate point: {"path":[0,0],"offset":3}
    toDOMPoint react-editor.ts:262
    toDOMRange react-editor.ts:277
    wt editable.tsx:184
    React 3
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    onChange with-react.ts:177
    apply create-editor.ts:86
    promise callback*apply create-editor.ts:84
    apply with-react.ts:52
    insertText text.ts:448
    withoutNormalizing editor.ts:1587
    insertText text.ts:414
    insertText create-editor.ts:188
    insertText editor.ts:319
    onBeforeInput editable.tsx:498
    React 12
    unstable_runWithPriority scheduler.production.min.js:19
    React 13
    unstable_runWithPriority scheduler.production.min.js:19
    React 4
    Redux 5
    a middleware.js:22
    dispatch Redux
    r actions.js:67
    h runtime.js:63
    _invoke runtime.js:293
    S runtime.js:118
    Babel 2
react-editor.ts:262:12

[mathjazz]

Ah, thanks. Let’s continue as agreed on the meeting (i.e. as you suggested), sorry for the false alarm.

[Pike]

The kicker is that you need to start with an empty inbox.

Then add a diacritic, add a char, move, delete, crash.