I am on my phone (samsung)
Using duck duck go browser
Did not occur prior to updates that took place a few weeks ago (when the UI on the site was updated)
Applies to hidden and not hidden polls.
In light mode, I can see the poll options just fine
In dark mode, I can't see any text inside the bars for each option, until I've voted (blindly)
Can confirm this also is a problem on desktop Firefox. I can hover over the options to see them, but by default the options are all solid black in dark mode.
This is fixed now. Thanks for reporting it.