I'm looking at 2023–24 NCAA Division I women's ice hockey rankings (as well as 2006 BCS computer rankings, referred to in this template's documentation...And also, this own template's documentation), and the table header is dropping into the first row or two of data in the table, thus covering up that data. There's also a blank row above the table header.
@MikeVitale: My guess is the module adding an overflow div around the table is messing it up because the {{sticky table start}} template does the same thing. Module line 140:
local ret = mw.html.create('div'):css('overflow', 'auto')
@Jroberson108 Yep, it definitely appears to be the "Make headers of tables display as long as the table is in view, i.e. "sticky" (requires Chrome v91+, Firefox v59+, or Safari)" user preference in the "Testing and Development" section of the "Gadgets" preference page. Unchecking that preference makes the Template:ColPollTable headers display correctly (i.e., not drop into the table and cover the top row.)