UnsupportedError: Cannot add to a fixed-length list when selecting or rendering large text in QuillEditor

[alhelali]

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Flutter Quill Version

11.0.0

Steps to Reproduce

I am encountering an UnsupportedError: Cannot add to a fixed-length list when using QuillEditor to handle large text. The error occurs specifically when I try to select (highlight) a large portion of text or when the editor attempts to render the content. Interestingly, copying the text works fine, but the error is thrown during the paint operation.

Here is the full error message:

The following UnsupportedError was thrown during paint():
Unsupported operation: Cannot add to a fixed-length list

Expected results

The editor should be able to handle large text selections and rendering without throwing an UnsupportedError.

Actual results

The editor throws an UnsupportedError when attempting to add to a fixed-length list during the paint operation.

Additional Context

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[CatHood0]

This is strange, could you show me some pictures or videos of how you are reproducing this error?