Tinymce: Uncaught IndexSizeError: Failed to execute 'setEnd' on 'Range'

[dok]

majorVersion: "4", minorVersion: "3.3", releaseDate: "2016-01-14"

to reproduce:

1. copy and paste text (down below)
2. editor.formatter.register({ textSize: {inline: 'span', styles: {'font-size': '%value'}} })
3. select some text
4. tinymce.activeEditor.formatter.remove(styleName, {value : '52px'});

it will throw a ridiculous amount of range selection errors

[spocke]

Can it be reproduced here:
https://www.tinymce.com/docs/demo/full-featured/

Need steps to reproduce it on fiddle.tinymce.com or the tinymce.com site.

[adambiggs]

+1 our users are running into these errors as well. Our app is using v4.3.4.

[fyrkant]

No answer on how to reproduce so I'm closing this, if you still have the problem open up a new issue with a clear reproduction.