Quick version
Will hide extension tab. Can hide more if hardcoded. Hiding tab is persistent, if you try to unhide it, it will hide again.
There are several ways to disable this. I might add user definable ways.
For now, and the less technical. Move the javascript file.
I recommend buring it one layer deeper.
Go to the extension folder this project is located in, if you have not changed the name it will be your_path_to\stable-diffusion-webui\extensions\tabhider\javascript
Create another folder, name it something like backup.
Move the javascript file into that folder.
Reload Ui using the shortcut button on the bottom of the webui.
Want to reenable it, move it out from backup and back into the javascript folder.
Want to hide another tab, open the file, go to the bottom, you will see where it says
document.addEventListener("DOMContentLoaded", () => {
TabHider.observeStartUp(["Extensions"]);
});Using Settings as an example, add the tab name to the list, like this.
document.addEventListener("DOMContentLoaded", () => {
TabHider.observeStartUp(["Extensions", "Settings"]);
});