In a long page of tables, the last border at the bottom of the table sometimes does not show. As you scroll through the page, you will see missing borders, but once you scroll back up the page, the borders have returned! See screenshot attached for example beneath Superglue.
Created attachment 109408 [details] Screenshot of bug example
Confirmed that this issue can be seen in Mac Nightly r97062 and Mac Safari Version 5.1 (7534.48.3).
Created attachment 110440 [details] granvilleoil page For historical preservation, a web archive of <http://www.granvilleoil.com/static/sample.html>.
Created attachment 110441 [details] granvilleoil HTML page For convenience, the HTML source of <http://www.granvilleoil.com/static/sample.html> as of the time of writing.
I tried to reproduce it on the latest WebKit but couldn't. Is it possible that it was fixed by bug 71550?
I have just checked with the latest Nightly, definitely not fixed. If you run through all the tables you will still see some missing bottom borders, although there do seem to be fewer the page still shows 4 missing for me.
I am unable to reproduce this using scrolling etc. in Safari Technology Preview 180. If someone else is able to reproduce, please comment. Else I think we can mark it as 'RESOLVED CONFIGURATION CHANGED' considering that it might have fixed over the years.