Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: http://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: http://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

I'm on Ubuntu 16.04. Atom 1.18.0 was fine, but since updating to Atom 1.19.0, if I have a file with unsaved changes and I try to close the tab by middle-clicking on the tab, then a modal pops up (Are you sure you want to close the file without saving?), but I can't click on anything. The cursor doesn't change no matter what I hover over and no clicks register on the modal's buttons or even other (non-Atom) windows. Clicking another window doesn't focus it, bring it to the front, or get any reaction.

My computer is still responsive to keyboard inputs, though even if I alt-tab to another window, nothing reacts to my mouse still. I have to press escape on Atom's closing-confirmation modal or otherwise close it before anything reacts to my mouse again.

If I close the file tab in any other way (clicking the X button, or pressing ctrl-w), the modal and my mouse work perfectly normal. With little non-web UI experience, I'd guess the issue has to do with some kind of blocking call (like the modal) happening or a lock being hogged improperly during the middle-click event handler.

Steps to Reproduce

1. Be on Ubuntu 16.04 (?)
2. Open Atom, open a file in Atom, and make some changes to the file without saving.
3. Middle-click on the file's tab.

Expected behavior: [What you expect to happen]

My mouse to work as usual: for the modal to be clickable, and to have the ability to click on other windows freely even while the modal is still open.

Actual behavior: [What actually happens]

See description.

Reproduces how often: [What percentage of the time does it reproduce?]

100%, tested with safe mode and a new ~/.atom directory too.

Versions

$ atom --version
Atom    : 1.19.0
Electron: 1.6.9
Chrome  : 56.0.2924.87
Node    : 7.4.0
$ apm --version
apm  1.18.2
npm  3.10.10
node 6.9.5 x64
python 2.7.12
git 2.7.4
$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"
$ uname -a
Linux canyon 4.4.0-89-generic #112-Ubuntu SMP Mon Jul 31 19:38:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux