Drag & drop doesn't work in a story with > 6k passages

[hhrichards]

Describe the bug.

I start to drag a passage with the mouse pressed. I release the mouse and click a second passage to drag. But it continues to drag the first passage, and not the second. This happens in documents with a large amount of passages where the UI is noticeably slower.

Steps to reproduce:

Try this on a document with over 6,000 passages. Drag and drop two passages that are in close proximity in a short amount of time.

Expected behavior:

The drag/drop functionality works as expected on a new project or one with a few hundred passages. But I'm experiencing this bug in a project with over 6,000 passages.

Additional context on this problem.

I'm working on a project with over 6,000 passages. Drag/drop functionality is quite slow. The bug is not present on a project with only 1,500 passages.

Twine version number

2.8.1

Does this problem occur with the web version of Twine or the desktop app?

Desktop app

What operating system does this problem occur on?

macOS

If this problem is occurring with the web version of Twine, what browser does it occur on?

None

Presubmission checklist

• I am interested in working on code that would fix this bug. (This is not required to submit a bug report.)
• I have done a search and believe that an issue does not already exist for this bug in the GitHub repository.
• If this problem is occurring with the app version of Twine, it still happens after I remove the user.css file from my Twine folder. (You would've added this file yourself. If you don't understand this question, you can safely check this box.)
• I have read and agree to abide by this project's Code of Conduct.

[klembot]

I think this is just performance issues with a story that size, period--I have a feeling that events are getting processed out of order, or getting skipped, which is why it's acting so weird. My one suggestion right now would be to look at ways to break up your story into smaller ones in Twine and then later recombine using a CLI tool.

Would you be OK with uploading an example story of this size for testing?

[hhrichards]

Yes of course. l've sent you a DM you on Patreon.