I have a Kinesis Freestyle keyboard which has keys for common shortcuts (ie a cut, copy, etc buttons).
However, for the last few days Eclipse has stopped receiving the keyboard buttons correctly, and even CTRL+X is not working. One button("Paste") is actually registering as a page-down instead.
But the keyboard buttons/shortcuts work fine in Chrome and in Windows.
Does anyone have a clue about this?
There are two ways to solve it: switch workspace, or "Restore Defaults" in the Preferences -> Keys menu

You can also switched workspace , that's what i did first, and everything worked fine again( i guess bec. I didn't fiddle with keys & shortcuts).
File->Switch Workspace
Apparently, based on this SO link - really weird eclipse keyboard behavior/bug? - it may be a configuration issue that is workspace-dependent(maybe a custom keyboard shortcut I added-on ??!?).
I'm still curious about a way to narrow down why, but it looks like a clash of the key-bindings.
Here's another link, Switching workspaces
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