Steps to reproduce:

  1.  Print it:
UIManager default
multiLineRequest: 'Please enter'
centerAt: Sensor cursorPoint
initialAnswer: 'foo'
answerHeight: 42.
  2.  Focus input field
  3.  Press enter
  4.  Press <cmd>z
  5.  Press Accept

Expected behavior:
The dialog is closed and the return value is 'foo'.

Actual behavior:
The dialog flashes and does not accept the input.

Infection not yet investigated.

Best,
Christoph
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