Wrong CI status in the PR list

[simurai]

Prerequisites

• Have you tried to reproduce the problem in Safe Mode?
• Have you followed all applicable steps in the debugging guide?
• Have you checked the FAQs on the message board for common solutions?
• Have you checked that your issue isn't already filed?

Description

The CI status of the PR list doesn't always match the CI status of the PR detail and .com.

Steps to Reproduce

1. Open atom/atom repo
2. Open the GitHub tab
3. Look towards the end to find PR #17105

Expected behavior:

The CI circle should have 1/3 green

Actual behavior:

The CI circle is fully red.

Reproduces how often:

I can't reproduce it, but...

@sguthals it seems like it's always the case that the small one is all red when two have failed of the three

Versions

Atom    : 1.22.1
Electron: 1.6.15
Chrome  : 56.0.2924.87
Node    : 7.4.0

apm  1.18.8
npm  3.10.10
node 6.9.5 x64
python 2.7.10
git 2.16.3

Additional Information

It seems to be correct in the PR detail pane:

[drguthals]

Sarahs-iMac:atom sarahguthals$ atom --version
Atom    : 1.22.1
Electron: 1.6.15
Chrome  : 56.0.2924.87
Node    : 7.4.0
Sarahs-iMac:atom sarahguthals$ apm --version
apm  1.18.8
npm  3.10.10
node 6.9.5 x64
python 2.7.10
git 2.16.3
Sarahs-iMac:atom sarahguthals$ 

[simurai]

From Slack:

I just confirmed that it is the case for all of the ones that have partial fails (more fails than passes)
All others (100% fail, 100% pass, 66% pass with 33% fail) display as expected

1	2	3