Possible bug when creating multiple models

[Xoffio]

Describe the bug

I'm trying to use the multi-editor code to edit multiple files. I'm making a hook where I save all the tabs, and each tab's information. If the tab list is empty then I don't render the Editor

If I have multiple files open then I edit them and later I close them When I reopen them seems like the disposeEditor is not disposing all the models so some data persist and one gets lost. usually the last one to be close.

I know I'm not too clear so I'll show you how to reproduce it.

To Reproduce

Steps to reproduce the behavior:

1. Here I have a code that I made to show the problem.

Imagine that the three first button are files on a bar. So every time they get click a new tab opens.

2. Open the three files

3. Modify each of them. Let's say: 1 for the first file, 2 for the second one, and 3 for the last one.

4. Then close all of them until the Editor closes as well.

5. Re-open each of then.

Here you will notice that one of the files is going to lose the data. These does not happens when keepCurrentModel is set to true

I think it has something to do with the function disposeEditor

Expected behavior

when re-open the files I expect that all the files get erase or that the data of all of them is preserve.

Desktop (please complete the following information):

• OS: Windows10
• Browser: Chrome
• Version [e.g. 22]

Note: I think this is a possible bug or I am using the library wrong.