Error on nested malformed list <ol> <ul> objects: Cannot read properties of null (reading 'querySelector')

[wvddrss]

<ol>
    <ol>
        <ol>
            <li><span>item 1</span></li>
            <li><span>item 2</span></li>
        </ol>
           </ol>
</ol>

It throw:

Uncaught TypeError: Cannot read properties of null (reading 'querySelector')
    at s (froala_editor.pkgd.min.js:7:25822)
    at r (froala_editor.pkgd.min.js:7:26299)
    at Object.g [as lists] (froala_editor.pkgd.min.js:7:26303)
    at h (froala_editor.pkgd.min.js:7:130299)
    at Object.L [as set] (froala_editor.pkgd.min.js:7:135815)
    at n (froala_editor.pkgd.min.js:7:523930)
    at Object.E [as toggle] (froala_editor.pkgd.min.js:7:524314)
    at w.Bootstrap.callback (froala_editor.pkgd.min.js:7:525236)
    at Object.n [as exec] (froala_editor.pkgd.min.js:7:44720)
    at c (froala_editor.pkgd.min.js:7:221305)
s @ froala_editor.pkgd.min.js:7
r @ froala_editor.pkgd.min.js:7
g @ froala_editor.pkgd.min.js:7
h @ froala_editor.pkgd.min.js:7
L @ froala_editor.pkgd.min.js:7
n @ froala_editor.pkgd.min.js:7
E @ froala_editor.pkgd.min.js:7
callback @ froala_editor.pkgd.min.js:7
n @ froala_editor.pkgd.min.js:7
c @ froala_editor.pkgd.min.js:7
a @ froala_editor.pkgd.min.js:7
t @ froala_editor.pkgd.min.js:7
d @ froala_editor.pkgd.min.js:7
a @ froala_editor.pkgd.min.js:7
(anonymous) @ froala_editor.pkgd.min.js:7
(anonymous) @ froala_editor.pkgd.min.js:7Understand this error```

[brambilliet]

How do I give this bug a thumbs up? Asking for a frustrated friend...