Sheets closes on mouse release within the gray area (outside the sheet)

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Describe the bug
Not really a bug, but more like an unexpected behavior. If you click (and hold down) somewhere on the sheet and then release it when the cursor is outside of the sheet (the gray area), the sheet will close. This could easily happen if you write something in an input field and then want to delete or change it. Marking the text, but doesn't release the button within the sheet.

To Reproduce
Steps to reproduce the behavior:

1. Go to design.swedbankpay.com/v/8.0.1/components/sheet
2. Click on 'Open sheet'
3. Try click within the sheet, and drag and release outside of it
4. The sheet will close

Expected behavior
Should not close on mouse release

Actual behavior
The sheet closes on mouse release

Screenshots