Figures disappearing in Office365 Word for Mac

I already prepare all of my images and then put all of my .png images into a single folder. This folder contains all of the images that are within my document.

Despite this organization, certain figures will be deleted from the document. All of the images are from the same folder location, so I do not think it has anything to do with where the images are located. If it were, then I expect all of my images to be disappearing.

Instead only the images that have a cross-referenced citation in the caption are being deleted. All other images have had no issues.

As a note, all of my images are using the "Top and Bottom" text wrap and are "grouped" with the caption. I have done this for easier formatting and placement of the figures. Is there something about this figure formatting that could be causing problems with the cross-reference citation manager?