scrollbar not displaying in output area

Prerequisites

• Have you checked the solutions in our troubleshooting guide for common problems ?
• Have you checked that your issue isn’t already filed ?

Description

Scrollbar is not displaying in the first section of the output area (the one with clock icon). Mouse wheel also does nothing, and there is no way to scroll to the bottom of the output area.

Steps to Reproduce

for i in range(1, 200):
    print(f'{i} test')

Versions

OS version: Windows 10

atom --version

 Atom    : 1.48.0
Electron: 5.0.13
Chrome  : 73.0.3683.121
Node    : 12.0.0

apm --version

apm  2.5.0
npm  6.14.5
node 10.20.1 x64
atom 1.48.0
python 3.7.3
git 2.17.1.windows.2
visual studio

Hydrogen version:

2.14.1

Plugins

Have you installed and activated any of the Hydrogen plugins below ?

• hydrogen-python
• Hydrogen Launcher
• Data Explorer

Expected behavior

A scrollbar should appear on the right hand side.

Screenshots

The first section of output area does not have scrollbar

The second one does

Additional context

More people seem to be having the same problem:

https://discuss.atom.io/t/hydrogen-scrollbar-output-not-displaying/75785

[BenRussert]

I looked at this and just opened #1995, take a look if you can @captainsafia or @aviatesk

[domwolfy]

Same issue for me although its not only the first output window, its all. Atom 1.49.0 x64, Hydrogen 2.14.4