This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
Since 3.4 dev20020426, the tab, up-arrow, and down-arrow keys aren't working for me in the source editor. Tab no longer inputs a tab but rather shifts focus around the components of the editor window. Up-arrow and down-arrow mostly to do nothing in the text window, but they will sometimes send focus away from it, and they do operate the scroll bars and tab-pane tabs when focus has been shifted to those components.
I deleted my user directory and re-installed NB 3.4dev20020503; problems has abated for the moment. I have another issue (#23143) of a keyboard problem apparently correlated with importing settings between NB versions. Could these two be related, or duplicates?
Oops! Make that first sentence "...; problem has abated...". Apologies, my bad.
Didn't stay abated for long. The problem returned after working with the IDE for awhile. And it's not just the source editor, the property sheet string editor is also affected.
*** Issue 23143 has been marked as a duplicate of this issue. ***
Found it. I had a form based on a class which installs a custom FocusManager during construction. When I opened that form in the form editor, the keys broke---my FocusManager just happens to co-opt the Tab, up-arrow, and down-arrow keys. If I don't install the FocusManager at design-time, there is no problem.
Abandoned my custom KeyboardFocusManager long ago; haven't had a problem since.