Hi Richard,
I just did a test from my side with the Outlook for Mac 15.6 and I didn’t notice this. Did it occurred when syncing the emails? Additionally, do other Mac users encounter this? Can you send us the related screenshots to have better understanding of the situation? To upload images, please click Use rich formatting and then select the Insert/Edit Media button.
Image may be NSFW.
Clik here to view.
Thanks,
Ran
