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Make a frame with a JLabel on it. The default text property is set to "jLabel1" Actviate the "Customize code" for the JLabel, and changing the line with setText from "default text" to "custom property". Put the cursor on line before the '1' character, the press the DEL key twice. The first time the 1 is deleted but then it beeps. jLabel1.setText("jLabel"); ^ If you delete from the start (i.e from the left double quote char), it seems ok but then I can only type one char. After deleting from the start with repeated DEL keypressed: jLabel1.setText(); typing 'g': jLabel1.setText(g); then 'e', it beeps. It also happens for other properties and controls. (on beta 2, windows and linux)
*** This issue has been marked as a duplicate of 91288 ***