This is a round up bug of several small cosmetic bugs in Nimbus. There are listed below:

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NimbusLAF: Button has not grayed out for editable combobox in disabled state.

The button looks enabled and it has not grayed out except icon in disabled state of editable ComboBox.This issue can see only with editable ComboBox and its not reproducible with non-editable ComboBox.I have tried this with latest 6u5 b04 pit build.

Please see the attached image for reference.

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Nimbus L&F : Regression: JMenu vertical line is not black & thick in 6u5_b04 build

JMenu vertical line is not black & thick in 6u5_b04 build, but its correct in 6u5_b03 promoted build. Hence this is a regression introduced in pit 6u5_b04 build. See 6616809 for example image and test code.


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Nimbus L&F : Scrolpane in Popup menu from JCombo has a border and should not

Regression in 6u10b08 Scrollpane in combo popup has a 4px border and should have none

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Nimbus L&F : Popup menu from JCombo has wrong backgound color

Regression in 6u10b08, should be white but is control grey

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Nimbus L&F: JOptionPane - Button alignment should follow native platform

On Windows the Ok button should be on the left and on all other platforms on the right. See 6623055 for more details.

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Nimbus L&F: PIT Issue: Selected text in JSpinner appears in a black color.

See 6624056 for more details.

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Nimbus L&F: Nimbus JFIleChoooser's "Look In" ComboBox does not have icons.

See 6595179 for more details.

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Nimbus L&F: JTree - Icon is not visible while editing the nodes

See 6647876 for more details.

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Nimbus L&F: PIT : Left side of Editable JComboBox is having lesser space than right side in pit bui

See 6605982 for more details.

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Nimbus L&F: Space between a textfield's text and the textfield enclosing broder is too high.

This is observed on Nimbus L&F on all OSes, with the current 6u4b02 pit build. 
Refer to the attached image for reference. The images are taken for a selected text for more clarity although the issue is about unselected text in a textfield also. 
Observe that the space between the textfield's text and the enclosing left boundary of the textfield is highest in Nimbus L&F. Visually it does not look very appealing.

See 6594640 for more details.

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Nimbus LAF : JTabbedPane dn't wrap tab policy scrollpane arrow buttons is missing

When a Tabbed pane is set to 'Wrap Tab Policy' it is suppose to show a arrow button which are used to navigate to tabs. but now in Nimbus LAF the arrow buttons are missing.
Step to reproduce:
1) Run the attached program.
2) Click on 'Wrap Tab Policy' checkbox . Observe that tabs are arranged in row, honoring the 'Wrap tab policy' but the arrow button are missing. 
But we can navigate through the keyboard from tab to tab  using arrow key.
This can be seen on OS only in Nimbus LAF.

See 6595240 for more details.

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Nimbus L&F: ToolTip Issues

This is observed on Nimbus L&F on all OSes, with the current 6u4b02 pit build. 
1) Tooltip does not have a bottom and left border around it. 
2) Insets around the tooltip text are too large making the tooltip appear huge. 
Screen short is attached for reference.  The screen shot also compares as to how it looks on GTK L&F with Nimbus theme.

See 6594283 for more details.

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Nimbus L&F: ToolBar placed at the left/right of the Frame does not show up all its components

See 6594754 for more details.

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Nimbus L&F:Menu Issues

See 6594259 for more details.

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Nimbus L&F: JSplitPane Issues

See 6594638 for more details.

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Nimbus LAF : JSplitPane divide size is incorrect in vertical split .

See 6594758 for more details.

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Nimbus LAF : JSplitPane dosn't paint focus indication

There is not difference in painted splitter when the splitter has focus. There is not other bug for this issue.

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Nimbus L&F: JSplitPane - OneTouchExpandable buttons are missing

See 6638764 for more details.

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Nimbus LAF : JTable in JScrollPane, the top trailing corner is empty

The top trailing corner of the scrollpane containing a JTable should be painted like the table header to blend in. There is not other bug for this issue.