What are the exact STR on your page?
I'm not sure what you mean by "STR". The validation is converting phone to (###) ###-#### format. If you type something less than 10 digits, it will turn the text box red and the focus is directed back to the textbox. If you hit return in Firefox, this works. If you hit tab after entry, the box is turned red, but the focus is on the next textbox in the tab order. This is the part that is not right. Other browsers make the action after tabbing the same as hitting return.
STR = Steps To Reproduce. It means you have to detail step by step what the user needs to do on that webpage to repro the bug. But now, I guess, your last comment is enough to repro the bug quickly. I'll try.
[bugday-20140811] I can reproduce this but is it a bug or normal behavior? Tested in IE11 and it behaves the same as Firefox in this regard. Actually, Firefox clears the box when I hit ENTER while IE11 does nothing. Both clear the box and set the focus to the next box when I hit TAB.
Hi Debra, Are you still having this issue?
http://facltest.org/index.php?option=com_content&view=article&id=4&Itemid=178 is dead, so this lacks a testcase