It may be an issue, but it is a fairly trivial one in the whole scheme of eBay making changes to the site to do damage control for Google Chrome's mostly unilateral attempt to "fix the internet". It is probably on the todo list, but a low priority.
For the most part I have seen no evidence that this forum is monitored. eBay folks do pop in once in a while, but even if they did, I suspect their answer would be the same as mine.
You didn't answer my questions (which wasted my time). eBay isn't going to fix it anytime soon, so you can complain about it or look at workarounds.
If the link is an HTTPS link and is causing the problem for the reason I postulated , and the HTTP version works, you can copy it to the clipboard from the emails, remove the S and make it an HTTP link, and paste it in the browser and do your business.
(If I were in that situation it would be a non-issue using an addon called Redirector in FireFox for which I could create a simple rule to intercept the non-working HTTPS links from the email client, and redirect to the working HTTP target without having to cut and paste. It could aslo be done with a dedicated 10 line GreaseMonkey redirection script in Firefox.)
There are ways to work around eBay annoyances until they get fixed.
