Labels for text posters in interactive videos

I am using the text interaction in poster mode. I have learned that this isn't an option on mobile which is unfortunate but not a big deal. The issue is that if the interaction is created in poster mode there is no option to make a label for the button mode which is how it will show up on mobile. I found that if I set it first to button mode, make the label, and then switch to poster mode, the label I set in button mode will show up on the mobile versions button.