Disappearing Worksheet items

If I load two TIFFs to build a color list, then export one (or more) as txt, the images disappear. Or if I have the two lists and ask for a dE report, the images disappear. Or the dE list. Probably easier to view this than describe; not sure I can upload a video here so this is the Dropbox URL to view:

https://www.dropbox.com/scl/fi/1in384vfcggfnppkzas3r/CTP-Disappearing-items.mp4?rlkey=vfl7p6c4ckhou3h4buj9pw56i&dl=0