Balloon toolbars for elements shift to opposite side of source element after using the rotator

[lkszzajac]

📝 Provide detailed reproduction steps (if any)

1. Open a demo for the merge fields feature https://ckeditor.com/docs/ckeditor5/latest/features/merge-fields.html
2. Create an element with 2 balloon toolbars as its source (e.g. insert an invalid merge field into an image caption)
3. Click the merge field and use the balloon toolbar rotators

✔️ Expected result

Balloon toolbars are fixed in place.

❌ Actual result

Balloon toolbars shift to the opposite side of the source element after using rotators.

Screen.Recording.2024-09-19.at.13.29.42.mov

❓ Possible solution

If you have ideas, you can list them here. Otherwise, you can delete this section.

📃 Other details

• Browser: n/a
• OS: n/a
• First affected CKEditor version: Found in 43.1.0
• Installed CKEditor plugins: n/a

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