Inventory, XP & armor empty upon login to Realm

My first login to my friend's realm after the 1.19.62 update, I spawn at the location where I logged off, but my hot bar and inventory are empty, my XP is reset to 0 and all of my armor (and map in off hand) are gone.

I have logged out of Minecraft and logged back in. I have rebooted Minecraft, rebooted the Kindle and when both of those didn't work; I tried entering the realm on my laptop. I have Windows 10S and get the same result. 

Edited to add: this is only happening on Realms. My own worlds saved on my Kindle/laptop seem to be unaffected.