Doesn't work in Nextcloud Notes App

[Discostu36]

The LT addon isn't active in the editor of the Nextcloud Notes app. The integrated spell checking of Firefox does work.

[Discostu36]

Here's the HTML code of the editor, maybe this helps:

<div class="CodeMirror-scroll" tabindex="-1" draggable="true" style="min-height: 300px;">
    <div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 50px; min-height: 32px; padding-right: 0px; padding-bottom: 0px;">
        <div style="position: relative; top: 0px;">
            <div class="CodeMirror-lines" role="presentation">
                <div style="position: relative; outline: none;" role="presentation">
                    <div class="CodeMirror-measure"><pre class="CodeMirror-line-like"><span>xxxxxxxxxx</span></pre></div>
                    <div class="CodeMirror-measure"></div>
                    <div style="position: relative; z-index: 1;"></div>
                    <div class="CodeMirror-cursors" style=""></div>
                    <div class="CodeMirror-code" role="presentation" contenteditable="true" autocorrect="off" autocapitalize="none" spellcheck="true" tabindex="0"><pre class=" CodeMirror-line " role="presentation"><span role="presentation">Dies ist eine Testnotiz</span></pre></div>
                </div>
            </div>
        </div>
    </div>
    <div style="position: absolute; height: 50px; width: 1px; border-bottom: 0px solid transparent; top: 32px;"></div>
    <div class="CodeMirror-gutters" style="display: none; height: 82px;"></div>
</div>