Invisible online AD Wall

I am having an interesting issue with Excel online, desktop is fine. In the document I am working on I have many cells with longer portions of text the spillover into the cells next to them, which is my intention. However, the text will not pass column AD. If I create a sentence that is many cells long it will always stop at AD. However, if I start the sentence in column AE it shows fine. Attached are two files that show this problem. One an image and the other Excel. Note, the file must be opened online in order for the problem to present itself.

Note:

This is ONLY an issue in Excel on line, it works just fine on the desktop app.