IE doesn't like @ character (delete the next char)

Hi all,

I'm experiencing a strange and boring situation... only reproducible with IE (neither Firefox nor Chrome raise this problem).

Test case description:

• Enter email address in a specific entry field

Data set:

• JeffBridge@gmail.com

Expected action:

• The entry field is filled in with 'JeffBridge@gmail.com'

Obtained action:

• The entry field is filled in with 'JeffBridge@mail.com'... of course, the test fails after this step.
  

This problem (the deletion of the first char after '@') does not occur on every run, but only some of them (average of 1/5 or 1/6?). I never reproduced it against Chrome/Firefox (tried several hundreds times).

I'm using the following versions: IE 11.0, Firefox 41.0, Chrome 45.0, TC 11.11

Any idea?