Bizarre Space Bar Behaviour

Hotkeys in TSO are notoriously unreliable. Sometimes they work, sometimes they don't within the same session and for the same activity. This is something I have got used to. However I found a very odd and undocumented hotkey that not only doesn't always work, but that doesn't always call the same action.

If I minimise the chat window, the space bar will maximise it again and will then toggle it minimised or maximised. Pretty cool. Found that out accidentally and liked that as a shortcut.
- However. If I then minimise the friends list, the space bar no longer works to toggle the chat window (and will not again in the same session), instead it toggles the friends list up or down.
- However. If I open the tools menu (the list with buttons for the forums, support, etc) then the space bar toggles that now instead of whatever it was toggling before.
- However. If I later minimise the chat window again, the space bar doesn't do anything at all until I open or close the friends list and tools menu - then it switches to whatever I just did.

It seems to switch to the last thing that I opened or closed except that it will never revert back to the chat window, only between the friends list and the tools menu.

How should the space bar behave and are there supposed to be hotkeys for these actions?

space bar got no hotkey configure, it is all about the flash player when you click something you are selecting this item or action, so when you click space bar, you just redo this action, it is an alternative way of clicking using mouse, as for example try to click tab, and see the selection box around that item or button, then click space.

So it is not issue or bug.