Are you around right now? I still can't repro and am curious to see your exact setup via screenshare, since offline we're getting different results.
Can't think of another way. I assume you mean you can't share the screen if I switch to you as JoinMe presenter? Pretty sure that works via browser alone.
I believe i've solved it.
Not sure how, but i've just re-inserted the form into the LP and tested, now both tokens are working as they should..
Agree with Sandy that this should work as expected if the form is on a Marketo LP for labels and the like, but one minor word of caution for the token-happy/anyone stumbling upon this later: while you can also place tokens in other parts of a form, such as with picklist values, know that using them there can cause some glitches within the form editor UI due to the way that's set up.