empty document with (bolt) style triggers twice the change listener

[eelco2k]

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Flutter Quill Version

11.0

Steps to Reproduce

1. start an empty quill editor.
2. set cursor/caret in active white area
3. press for example the "B" (bolt) button.
4. press on letter on the keyboard. (H) for example

the function of the listener will execute twice...
textEditorController.changes.listen((DocChange event) {
// will exec. 2 times...
});

these are the delta's

{"before":[{"insert":"H\n"}],"change":[{"retain":1,"attributes":{"bold":true}}]},
{"before":[{"insert":"H\n"}],"change":[{"retain":1,"attributes":{"bold":true}}]}

Expected results

triggered only once with correct docChange

so only one entry:

{"before":[{"insert":"\n"}],"change":[{"insert": "H","attributes":{"bold":true}}]}

Actual results

see above

Additional Context

No response