1300919 - [e10s regression] Double-clicking a focused <input> doesn't open the autocomplete popup

Status: RESOLVED DUPLICATE of bug 1183037

(Toolkit :: Form Manager, defect, P1)

Description

[Matthew N. [:MattN]]

STR:
1) Focus a field which would have form history (or datalist) results such that the autocomplete popup doesn't appear
2) Double-click in that same field

Expected results:
The autocomplete popup should open (though I do see a Flicker in between the clicks on non-e10s). This behaviour matches Chrome.

Actual result:
The autocomplete popup opens on the first click and then closes on the second one. Even worse is that it leaves the field in a bad state in that the down arrow on the keyboard also doesn't work after step 2 (regardless of how many times it's pressed) so it makes it seem like there is no form history or suggestions for the field. This also affects password manager autocompletion.

Note that double-clicking an unfocused field shows the autocomplete dropdown as expected. The bug is with a focused field.

Last good revision: f986e55c4e0b (2015-05-29)
First bad revision: 45a4d6336c73 (2015-05-30)
Pushlog:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=f986e55c4e0b&tochange=45a4d6336c73

The problem is likely in one of the three bugs: bug 1162330, bug 1162329, bug 1024437

Before those bugs the autocomplete popup didn't work at all in e10s it seems so it may not be worth looking to much at them.

Comment 1

[Matthew N. [:MattN]]

[Tracking Requested - why for this release]: non-e10s regression due to switching non-e10s to the already broken e10s code path

Note that the problem occurs only when E10S is enabled before the code paths were unified in bug 1294502. With the unified code paths this is also broken with non-e10s.

Non-E10S Regression Range:
Last good revision: 97a52326b06a07930216ebefa5af333271578904 (2016-08-18)
First bad revision: 23c2ec5544b9e0a74a047b87b594e4c36a8fe95c (2016-08-19)
Pushlog:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=97a52326b06a07930216ebefa5af333271578904&tochange=23c2ec5544b9e0a74a047b87b594e4c36a8fe95c

Comment 2

[Blake Kaplan (:mrbkap) (inactive)]

This is probably a dupe of bug 1183037.