Cannot read properties of undefined error when "clearFormatting" is clicked

[athreyacodes]

Issue details:
Clicking on clear formatting gives below JS errorWhen the editor has iframe enabled and enter behaviour is true.

new FroalaEditor('div#froala-editor-br', { enter: FroalaEditor.ENTER_BR, iframe: true });

Steps to follow:

1. In configuration, update enter as FroalaEditor.ENTER_BR
2. In configuration, update iframe as true
3. In editor, type few words, select them and change font-size/font-family
4. click on clear format. Below error is shown

Error:
Uncaught TypeError: Cannot read properties of undefined (reading 'toLowerCase')
at Object.h [as closeTagString] (froala_editor.min.js:7:10846)

JsFiddle:
https://jsfiddle.net/athreyacodes/3dwLhfgo/1/