Hi there! I don't know, if authors know about this bug, but I'll write about it here.
I clicked to "Options" button in the top menu and I activated the function "Global speed limit".
After that I wanted to deactivate it, so I clicked to button in bottom information panel, but when I opened
the "Options" button again, I saw it was checked (active).
I don't thing it is right.
PS: I'm sorry for my English, if something is wrong.