Adding custom plugin does not load in future sessions after first use of plugin.

[slothoth]

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Describe the bug
A clear and concise description of what the bug is.
When developing new plugins on Windows, there is a fault where the plugin can only load the first time when rebooting draw.io.
To Reproduce
Steps to reproduce the behavior:

1. Make a js test plugin with this code:

Draw.loadPlugin(function(ui) {
    console.log('Plugin initialized');
}

2. Load the plugin by going to Extras>Plugins>Add>External Plugins>Select File and choose your file
3. Close and relaunch drawio, making a new blank diagram. Check Help>DeveloperTools>Console and see the log message works
4. Close and relaunch drawio a second time, making a new blank diagram. Check Help>DeveloperTools>Console and see the log message is not present, and so the plugin has not loaded. Open Extras>Plugins to see the plugin still shows as listed.

Expected behavior
A plugin that is added and says it is loaded in the dialog persists across sessions.

Screenshots
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draw.io version (In the Help->About menu of the draw.io editor):

• draw.io version v26.0.9

Desktop (please complete the following information):

• OS: Windows 10

Additional context
Add any other context about the problem here.
Done using a fresh install with default settings, beyond running with the --enable-plugins argument