command-click on links does not always work as expected

When I click on a link in an incoming email, I am switched to my browser and the links opens in the new window (tab). If I command-click on the same link, the switch to browser should not happen but the link should open in the browser in the back. That occurs as expected on the first command-click. However, subsequent command-clicks, whether in the same email or another, do switch to the browser that is ignore the "command" modifier. However, if I click anywhere in the mail window before the command-click, the command-click works as expected. It is clearly an interface bug. Attached are 2 screencasts that illustrate that. One shows command-clicks (red circles) without the extra click, that is as one would use them normally. Another one shows how the extra clicks (black circles) remedy the problem.

The workaround is simple and effective, so it is not a critical bug, but one has to stay cognitively alert and remember about the extra click, which is easy to skip when working under time duress, causing aggravation due to wasting time for switching the apps In other words, it would be nice if MM behaved always as expected.