One of the instructors of my institution was having the same problem. The "answer" was not very helpful - why is it marked as the answer?
@clpatter's response was more helpful. With it, I found the problem text/code - although I cannot explain it.
The following page content (shown as HTML code) exists towards the bottom of my page:
<p>Expand then simplify:</p>
<p><img src="https://learnerlink.instructure.com/courses/17999/files/4798973/preview" alt="image.png" width="93" height="325" data-api-endpoint="https://learnerlink.instructure.com/api/v1/courses/17999/files/4798973" data-api-returntype="File" /></p>
<p><br />Expand with unknown outside ():</p>
<p><img src="https://learnerlink.instructure.com/courses/17999/files/4798974/preview" alt="image.png" width="108" height="338" data-api-endpoint="https://learnerlink.instructure.com/api/v1/courses/17999/files/4798974" data-api-returntype="File" /></p>
<p><span style="font-size: 12pt;"><strong><span style="color: #000000;"> Answer 6)</span></strong></span></p>
<p><img src="https://learnerlink.instructure.com/courses/17999/files/4798979/preview" alt="image.png" width="412" height="82" data-api-endpoint="https://learnerlink.instructure.com/api/v1/courses/17999/files/4798979" data-api-returntype="File" /><span class="mceNonEditable" style="display: inline-flex;" aria-label="Loading placeholder for image.png" data-placeholder-for="image.png"> <img style="position: absolute; left: 0px; top: 0px; width: 4px; height: 1px;" aria-hidden="true" /> </span></p>
<p><span id="placeholder-4" class="mceNonEditable" style="display: inline-flex;" aria-label="Loading placeholder for image.png" data-placeholder-for="image.png"></span></p>
<p><span style="font-size: 12pt;"><strong><span style="color: #000000;"> Answer 7)</span></strong></span></p>
<p><img src="https://learnerlink.instructure.com/courses/17999/files/4798980/preview" alt="image.png" width="417" height="75" data-api-endpoint="https://learnerlink.instructure.com/api/v1/courses/17999/files/4798980" data-api-returntype="File" /><span class="mceNonEditable" style="display: inline-flex;" aria-label="Loading placeholder for image.png" data-placeholder-for="image.png"> <img style="position: absolute; left: 0px; top: 0px; width: 4px; height: 1px;" aria-hidden="true" /> </span></p>
<p> </p>
<p><span id="placeholder-5" class="mceNonEditable" style="display: inline-flex;" aria-label="Loading placeholder for image.png" data-placeholder-for="image.png"></span></p>
<p> </p>
Through trial-and-error, I found that the issue was with/in <span>
. It turns out, the user had used a tool called TinyMCE - a popular rich text editor. Inside the <span>
, a foreign class was used called "mceNonEditable". It seems that this was being interpreted as placeholders and it might have been assumed that the content is still being uploaded.