When you undo the last change, the entire contents of the editor are selected

[Alex-302]

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AdGuard Extension version

v4, v5

Browser version

Chrome

OS version

Windows 10

Ad Blocking

AdGuard Base filter

Privacy

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Issue Details

Steps to reproduce:

1. Add few lines
2. Save
3. Edit the first line
4. Save
5. Press Ctrl-Z to undo the last change

Expected Behavior

The last change is reverted.

Actual Behavior

The first attempt to undo a change causes the editor contents to be selected.

Screenshots

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Additional Information

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