Since 1.17 there seems to be some very big issues in Realms atm. These issues are being experienced by several players accross multiple platforms including Xbox one, PS4 and ios.

The primary issue relates to progress in the game and that seems to be affecting other areas.
Issues incluce:
*Being logged out of realms then having issues logging back on. When successful in logging on, finding that anywhere from half an hour to 5 hours of game progress lost.
*logging on to find builds changed (ie pistons missing, sometimes replaced with stone blocks)
*logging on to find ender chest items changed - not removed but altered. (ie I had 2 stacks each of dripstone block and pointed dripstone and when I logged back in I found that I had 3 dripstone block stacks and only 1 of pointed driptsone)
*signs not saving whats written on them.
*game locking up - not able to harvest, open chests etc
*thrown tridents dissapearing
*bee hives dissapearing - Not where they were placed and not where they were taken from.