Two-step caret movement fails at the end of paragraph - Firefox only

[jodator]

📝 Provide detailed reproduction steps (if any)

1. open t/1301 manual test (issue moved to Two-steps caret movement when attribute starts at the beginning of block #4277)
2. execute manual test description

✔️ Expected result

The selection should be <b>bol{}d</b><i>i</i> (after "l" but before "d").

❌ Actual result

You have to type fast in order to make 2SCM to work:

📃 Other details

• CKEditor version: 565569a

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[CKEditorBot]

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[CKEditorBot]

We've closed your issue due to inactivity over the last year. We understand that the issue may still be relevant. If so, feel free to open a new one (and link this issue to it).