Here is what i got you were correct i didn’t get anything the status bar and got the following in the ruby console.
> xt = “Select starting point of stile. Ctrl cycles Mode.”
Sketchup::set_status_text $exStrings.GetString(txt), SB_PROMPT
Error: #<NameError: undefined local variable or method `txt’ for main:Object>
<main>:1:in `<main>’
SketchUp:1:in `eval’

I am testing now on fresh install of 2015 on the mac like Greg suggested still see same behavior.