Prerequisites

• [ X ] Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: https://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

The drag-and-drop positioning of the panes has not been working since (including) version 1.60.0-nightly22.

Steps to Reproduce

1. Install V1.60.0-nightly22 / 23 / 24 on Windows 10.
2. Open Atom.
3. Create a two text files T1.txt and T2.txt.
4. Click on the title tab T1.txt and drag to the left of T2.txt.
5. A shadow image appears where the text pane is dragged to.

Expected behavior:

The text pane can be dragged and dropped into a new position.

Actual behavior:

The repositioning of the pane is not allowed

Reproduces how often:

Always.

Versions

PC running Windows 10
Installation was done using "portable mode".

Functional in V1.60.0-nightly21. (https://github.com/atom/atom-nightly-releases/releases/download/v1.60.0-nightly21/atom-x64-windows.zip)

Not functional in V1.60.0-nightly22. (https://github.com/atom/atom-nightly-releases/releases/download/v1.60.0-nightly22/atom-x64-windows.zip)

Additional Information

cc: @50Wliu
Possible causes could be:
f7bb32c
e951766
01d7b88