I found this bug a while ago with beta 2 (I don't know if it's also in the non-beta version), but I have forgotten to say it before.
When a GUI appears, it does not detect a mouse click until the mouse starts moving. Not a serious bug at all, but it's a bit annoying some times.
Thanks for the report - I'll get it fixed.
ok, good :)
Ya know, it doesn't always do that. It does that if I bring the GUI with F5 and does it whenever I use an item on another (the gui goes off, execute the action then goes on). It doesn't do it anywhere else and it is not a bug in my code because the buttons don't even change when I hold the mouse over them.
Yeah, it seems to happen if the GUI is turned on, then off, then back on without the mouse moving. Anyway, I think I've fixed it now so the next beta should include the fix.