Arthur Westerman

Confirmed to still be an issue in 1.17.41 on Realms.

Just had two more rollbacks earlier today, within 15 minutes.. Realm lag and entity corruption is getting really bad too..   Realms is unplayable, so I've canceled my subscription and am going to look into hosting my own private server on Azure.

Martin, I don't think you can. The server itself determines when to save. Realms run in the cloud, and if everyone were manually saving to get around the bug, it would overload the servers and increase the scale of the bug.

Also, I don't think it would help. The fact that the game disconnects and reverts back to older backups, means that saving is not possible. Everytime auto-save fails, it crashes the realm, which is then rebooted with the last backup.

As a temporary solution, you can download the world and run it on your device or pc. Not ideal, but better then losing hours of playtime because of this bug.

I have the same issue in 1.16.201. I used a grindstone to remove the enchantments from a netherite sword, and it didn't clear the cost.

Using a 3rd party tool (UME 1.7.3) to browse the stats gives me this:

I tested out the unenchanted sword on a skeleton to see if it would reset RepairCost, but it did not.

For those of you who are confused about how maps zoom out, here's a little explanation:

Maps have a centerpoint, and each centerpoint has to be a multiple of the mapsize apart to ensure no overlap between same-level maps. So a level 0/4 map will be 128x128 blocks, and centerpoints will always align with 128 on both axis, ie -256, -128, 0, 128, 256, etc. Level 1/4 will be 256x256 blocks, with centerpoints aligned to 256 : -512, -256, 0, 256, 512, etc.

Let's start with a map created near (0,0) (I'm leaving out the Y coordinate here, as it's not relevant.)

Level - Centerpoint - Area
Level 0/4 (0,0) [-64,-64]-[63,63]
Zooming this out would get you:
Level 1/4 (0,0) [-128,-128]-[127,127]
Level 2/4 (0,0) [-256,-256]-[255,255]
Level 3/4 (0,0) [-512,-512]-[511,511]
Level 4/4 (0,0) [-1024,-1024]-[1023,1023]

So how would this look for the neighbouring map to the east of the Level 0/4 (0,0)?
Level 0/4 (128,0) [64,-64]-[127,63]
Notice how the centerpoint is not within the Level 1/4 (0,0) map? That means it will not be part of the Level 1/4 (0,0) map when zoomed out, but the one east of it! And due to the math involved, this particular map repeats that for each level! So you get:
Level 1/4 (256,0) [128,-128]-[383,127]
Level 2/4 (512,0) [256,-256]-[767,255]
Level 3/4 (1024,0) [512,-512]-[1535,511]
Level 4/4 (2048,0) [1024,-1024]-[3071,1023]

So yeah, fully zooming out a map made at 64,0 will create a map for an area almost 1000 blocks away. A bit counter-intuitive, but there ya have it 😃