Index file does not get updated when making changes via Longform pane. Longform pane does not initialize from index file upon start-up.

[Ryuuramaru]

Versions Longform version: 2.0.7 Obsidian version: 1.6.7 (happened on 1.6.5 also, but did NOT happen before that) OS [e.g. macOS, Windows, iOS, Android]: Linux (Flatpak), Android Theme: default Other plugins that you think might be relevant here:

Describe the bug

• Index file does not get updated when a new scene is added via the Longform pane.
• The Longform pane also does not import the project from the Index file until I manually edit it (add a random ignoredFile, for example), in which case Longform updates properly. This also happens from user scripts folder setting, as well as scene template setting.

These are two separate behaviors, but I feel like they're part of the same bug.

To Reproduce Steps to reproduce the behavior:

1. Have a Longform project with multiple scenes.
2. Open Obsidian
3. Open Longform pane
4. Notice Longform pane not showing the project that it should have imported from the Index file.

OR

1. Have a Longform project open.
2. Add a scene either from the Longform pane (or change any setting)
3. Notice the Index file not updating to reflect the changes.

Expected behavior Longform should properly update and read its index file to keep track of a user's project.

Screenshots

First Behaviour: Upon opening Obsidian: Upon manually editing the Index file:

Second Behaviour: Pre-change: Post-change (notice the Index file is unchanged):

Additional context

• This issue happens with Sync set to off as well.
• Issue has a 100% reproduction rate.
• Possibly related to: https://github.com/kevboh/longform/issues/212

Console errors:

Uncaught TypeError: Cannot read properties of null (reading 'left')
    at VerticalLinesPluginValue.recursive (plugin:obsidian-outliner:2565:41)
    at VerticalLinesPluginValue.calculate (plugin:obsidian-outliner:2484:30)

Uncaught (in promise) TypeError: Cannot read properties of null (reading 'length')
    at ignoredPatternToRegex (plugin:longform:36596:41)
    at eval (plugin:longform:36543:64)
    at Array.map (<anonymous>)
    at StoreVaultSync.eval (plugin:longform:36543:53)
    at Generator.next (<anonymous>)
    at fulfilled (plugin:longform:28:58)

[Ryuuramaru]

Just tested (probably should have done this beforehand), this does NOT happen inside a new vault with only Longform installed. The console also does not log any errors:

Disabling all plugins from my actual vault and restarting Obsidian does NOT fix the issue. It does however only generate 1 error instead of 2.

Uncaught (in promise) TypeError: Cannot read properties of null (reading 'length')
    at ignoredPatternToRegex (plugin:longform:36596:41)
    at eval (plugin:longform:36543:64)
    at Array.map (<anonymous>)
    at StoreVaultSync.eval (plugin:longform:36543:53)
    at Generator.next (<anonymous>)
    at fulfilled (plugin:longform:28:58)

[Ryuuramaru]

I managed to fix it:

1. Uninstall Longform
2. Remove all Index files
3. Reinstall Longform
4. Create a new Longform project in the same folder with the same name as the previous project.

This will cause the Index file to be created in the place of the old one, and all scenes will be picked up by the auto-adder. I have no idea why this works however, but I'm leaving it here just in case anyone else has issues.

This fix also removes all errors in the console, in case this info proves useful.

[Ryuuramaru]

Closing this as I managed to fix it on my own, and it could just be due to an Obsidian update. If it reoccurs, I will reopen it.