This image should sum it up:
Note: I did try with www.roblox.com, and it wasn’t clickable either.
This drives me up the walls. Also, it’s very unsettling how we can’t directly get to a players profile from any page.
It’s been deliberately done. Probably some reason like “to stop users copy/pasting malicious links”.
You can fix it yourself using a rule in Stylish like this:
.dialog-container .dialog-body .mCustomScrollBox {
-webkit-user-select: all !important;
-moz-user-select: all !important;
-ms-user-select: all !important;
user-select: all !important;
}
Annoying work-around, but I wouldn’t count on ROBLOX changing it.