Sometimes I want to post comments that include @-notifications but can't work the names into the comment text organically. In those cases, I write my comment out and then tack on a @JohnDoe at the end, which works just fine.

Well, it did work, until the otherwise-awesome new name autocompleter was introduced. Now I type out @JohnD and hit Tab, and the whole name appears, but I can't submit the comment by pressing Enter anymore. The Enter key just does nothing. And actually, it doesn't matter if I tab-complete the name or not.

I don't think it's just me because it happens on multiple computers, although they're both running Win7 Pro and recent Firefoxes. Also, I would understand — but disagree — if this was considered "not a bug, just reword all your comments that end this way."

EDIT:
As the ever-intrepid pseudo-employee Tim Stone pointed out in the comments, what I initially reported is a special case of a more general problem: Enter submission of comments fails whenever the tab complete suggestions are being shown.

• Since this won't happen if I reference @Pop (because he's the post owner and therefore not eligible for autocomplete), I'm posting a comment so that others can attempt to reproduce here. – Shog9 Sep 22 '11 at 18:24
• Attempting to repro @Shog9 – Matthew Read Sep 22 '11 at 18:27
• Repro failed, Enter still worked. Chrome 14.0.835.186 beta-m / XP. – Matthew Read Sep 22 '11 at 18:27
• Another attempt on IE8/XP @Shog9. Success, Enter did not work. After submission, comment box also still contains my text instead of being reset to blank. – Matthew Read Sep 22 '11 at 18:29
• Ew. Trailing spaces are icky. But we'll see if it works. @Shog9 (EDIT: It does, and the trailing space is trimmed automatically.) – Pops Sep 22 '11 at 18:36
• The problem is more generally that you can't submit a comment if the tab-complete suggestion is shown, by the way (which just happens to occur naturally when the @mention is at the end of the comment). – Tim Stone Sep 22 '11 at 19:04
• Attempt with Firefox 3.6 on Vista @Shog9 EDIT: works only with the space workaround - yuck. – Hendrik Vogt Sep 22 '11 at 19:07
• Thanks @TimStone, I hadn't tested that! I reproed it with this comment, and will add it to the question now. – Pops Sep 22 '11 at 19:09
• Tangentially related: meta.stackexchange.com/questions/63644/… – Pops Sep 22 '11 at 19:13
• Who the bloody hell drops names at the end of the comment? Tidy it up, guests are arriving – random Sep 22 '11 at 22:50