createTag broken in version >= 4.0.6 for tags longer than 2 characters

[oserban]

I tested this code on 4.0.6 and 4.0.6 (only the releases and not the RC) and works well on 4.0.5. My usage of select2 is very simple:

$('#tags').select2({
   tags: true,
   createTag: function (params) {
      console.log("create tag", params)
     return params.term.match(/^[a-z0-9-_]+$/) ? {id: params.term, text: params.term, newTag: true} : null;
     }
});

the create tag function is fired for the first 2 characters of the tag and then stops for the rest.

[jbogdani]

The issue persists in version 4.0.7.

[kevin-brown]

Can you create a jsbin that reproduces this issue?

We don't have this issue in the docs, which makes me suspicious: https://select2.org/tagging

[oserban]

Sorry for not providing a JS Bin in the first place. Here it is: https://jsbin.com/yunayiwodo/edit?html,console,output

The problem occurs when you try to type in tags longer than 2 characters.

[oserban]

After a bit of digging this seems to be related to issue #5510 and issue #5485

[silent-tan]

same problem

[mariuszkrzaczkowski]

the same problem and the same lack of solution

[lucasprogamer]

same problem

[lucasprogamer]

i install version 4.0.0 to solve problem.

[JakubSvestka]

same problem

[kevin-brown]

Please see #5485 (comment) for why this still remains unsolved.

We have a jsbin for this, which is why we know the issue exists. Unfortunately we can't reproduce this issue in our current test suite, which explains why it wasn't caught earlier. If someone is willing to donate some of their time to making a unit test that reproduces this issue, I'll willing to donate some time to fixing whatever is causing the issue.

[PHPist]

This problem is related to jquery-3.4.1.js

[collimarco]

@kevin-brown Since this is a severe and widespread issue, can you consider merging the fix now? Several months have already passed. The tests can be added later.

[Wolfteam]

@kevin-brown This one shoud be reopened.
In this jsfiddle: Select2
after you type 2 characters, the first option gets automatically selected

[kevin-brown]

This should have been fixed in 4.0.8 with and additional level of edge case smashing in 4.1.0-beta.1 If you are still seeing this issue, please open a new ticket with additional details.