Input rendering is deferred after auto-correction in Safari 17.2.1

[packagethief]

In the latest version of Safari (17.2.1), input rendering can be deferred until the next input after Safari has performed an auto-correction of entered text.

Steps to Reproduce

1. Using Safari 17.2.1, visit https://trix-editor.org and clear all existing text from the editor.
2. Ensure that Safari's auto-correct option is enabled (Edit > Spelling & Grammar > Correct Spelling Automatically).
3. In the editor, press Return once to insert a new blank line.
4. On the next line, enter some text that will be auto-corrected, like the lowercase letter "i", then press Return. Observe that "i" is auto-corrected to the capital "I".
5. On the new line, enter any single character. Observe that the character is not rendered.
6. Enter another single character. Observe that both characters are now rendered.

Demo

trix-safari-input.mov

Details

• Browser name and version: Safari 17.2.1
• Operating system: macOS 14.2.1 (23C71)