Well, two more reports proves it's not just me.
Unfortunately, when something breaks that badly, it either doesn't make sense to use it... or you need to add some browser sniffing that triggers a Plan B.
That type of breakage makes it look like you installed a site template and forgot to add your content. It needs to at least "break" into a normal table, without the pane freezing effect, but still retaining the content.
If that can't be straightened out, then it would probably make more sense to use a floating DIV that returns to the top when the page is scrolled (like some sites do with their menus.
Those can probably break as well, but I think it would do so more gracefully, if no backup plan is in place.
I think if you're not going to thoroughly test it and work out the bugs, it's probably just best to just repeat the header every so many rows.
That can easily be done with a loop, if generating the table dynamically, where you just count the rows as you write them.
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