General - ALT-T is used for 2 things in english version

[Mr-Fly]

I am using the english version since start.
If you press ALT-T, this hotkey is used by default for the Tree, but also marked through underline in the menu for tools.
It happened to me a couple of times, pressing ALT and then seeing the T to be underlined to press it and get the TREE instead of the Tools menu.