JTextArea as ListCellRenderer in JPanel with JSplitPane and text wrapping

Hi.
I have problem with JTextArea text wrapping. The JTextArea is used as ListCellRenderer in JList and it has set:
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);I can dynamically add new Notes, modify and remove notes on JList. The capacity of the Text is various so the size of cells is various.
The JList is in JScrollPane configured like this:
JList notesList = new JList();
JScrollPane scrollPane = new JScrollPane(
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER
scrollPane.setViewportView(notesList);This scrollPane is put on the left component in the JSplitPane.
When I put one note with any capacity I want, word wrapping works great even if I move the splitter. The size of cells in JList changes as I want. When JList has more width the cells have less height, when JList has less width the cells height grows because of text wrapping.
Problem
Sometimes and I don't know when and why the cells size is fixed.
I put new note to the list, JList lays the cell, calculate the size and disply it. It is good but when I move splitter the size of the cell is the same. It seems that during moving the splitter the JTextArea doesn't calculate their size.
I would like in every cell in JList to see whole text wrapped. When I make more width by slider I would like to see whole text with less number of rows. When I make less width with the slider I want to see whole text wrapped and more higher cells.
Can someone help me where to looking for ideas.

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*As according to SAP NOTE ;668466*
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Symptom
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