Safari 14.1 and Web Pages Containing <wbr>

My website at whitefiles.org contains numerous tables styled with css as 'nowrap', but with <wbr> tags included on the page to ensure wrapping on small devices (although some tables are yet to be done this. way).

It all worked fine in Safari 14.0, but often fails in 14.1, although it looks fine in Google Chrome. The problem also exists in Safari in iOS 14.5, the tables still adjusting their width correctly, but the text continuing out to the right. Oddly enough, if I put <span> tags around the <td> content it fixes the problem, also other tags in 'code' text.

I assume this is something that Apple will fix in the next version of Safari. I've reported it to Apple, but feel free to comment.

R