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Created attachment 102648 [details] component.setToolTipText("") results a tiny empty box shown on screen (between uses and of) ComboBoxUpdater sets tooltip text by calling component.setToolTipText(""); instead of component.setToolTipText(null); when the value is not inherited from parent or default, which results a tiny empty box shown on the screen. See the screenshot attached.
Reproducible.
Created attachment 102650 [details] Patch: call component.setToolTipText(null) instead
Yes, I was already working on a (slightly larger) patch.
core-main #0bc19b9f4bb2
Integrated into 'main-golden', will be available in build *201010280000* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main/rev/0bc19b9f4bb2 User: Jesse Glick <jglick@netbeans.org> Log: #191375: setTooltip("") brings a tiny empty box on screen