Bug or not?

[Spelunky]

When the "Show vertical tabs button" option is disabled, shouldn't the button also disappear from the vertical bar?

[#2]

No, it should not (at least ATM)

[#3]

Hi, it's not a bug,
when you are already in the vertical tab mode, you won't see the changes taking effect until you switch back to horizontal mode.

the moment you switch, the vertical tabs button disappears :)