[Xymon] embedded url won't work?

Hi we are using embedded URL with alerts and withe the TEXT parameter in order to direct the SOC team who monitors the monitor :) to call the right team to handle incidents. This is a URL to an html document outside of xymon. e.g. in the analysis.cfg there are such entries for monitor processes in the form e.g. of TEXT="<a href=/alerts/xymon_sendmail.html target=_blank>sendmail</a>" This is working fine for 4.3.18, but stopped working when migrating to 4.3.28. The links showed, and when hovering on shows the correct URL, but nothing happen when clicking - this never made its way back to the apache server (access log). URL embedded in the columndoc works fine. it is running on Oracle Linux 6.8. Any idea? Cheers Ron