This is on Realms, isn't it? This seems to be a duplicate of MCPE-17647 which is not resolved, (and is not the same as MCPE-16948.)
Zoom 1, 3, and 4 maps are blank (point of origin recentered?...to where?), and all zoom 2 maps recenter to (0,0) regardless of point of origination.
Interesting. Maps have bugs on MCPE Realms too, but there, the z=1, z=3, and z=4 stay blank (unknown center?) and all maps at z2 recenter to (0,0) instead of their proper place on the grid.
First noted 0.16.0, persists in 1.0.0 MCPE Realms, iOS 10.2, iPhone 6s. Zoom 0 maps work fine, and you can add compasses and rename them. When you resize to zoom 1, they are blank in the area where the small map was created. If you resize to to zoom 2, and the map's center is changed to (0,0) , regardless of where they were created or resized (please see attached). (The zoom 2 map containing (0,0) should center at (192,192)). Resize to zoom 3 and 4, they are blank again. I have not been able to determine where the centers for Zoom 1,3,and 4 are, if they work at all. Oddly, this only happens in Realms (see attached for difference in single player/local vs Realms). In the same seed on single player, the maps work as expected. As a result, in MCPE Realms (survival mode) the only useable maps are zoom 0, and one location of a zoom 2 map.
This is NOT a dupe of MC-16948. Please reopen this.
Maps appear to be working again in Creative mode, but in MCPE Realms Survival mode, they are most definitely an issue. Maps work at Zoom 0, but on zoom 1 they go useless, then on Zoom 2, they work again, but they recenter themselves, and it doesn't seem to matter where you were when you created them. I am researching this further, to find out how they change at zoom 3 and zoom 4, and I will post more when I have more info.
Realms world download/save still failing. MCPE v 1.0.0 from a Samsung Galaxy S7 running Android 6.0.1.
I got notice of the resolution yesterday. Unfortunately, the report says it is for 0.17.2. It looks like we will have to wait for the next update and deal with small-area maps until then.
The description of MCPE-16948 seems to work as intended. This bug is reported in the comments. Original report seems to refer to "normal" map clearing, but is understandably confused with this bug.
Duplicate of MCPE-17647, Duplicated by MCPE-18751, MCPE-18764
I've had this problem too - I've seen renaming costs up to 32 levels with multiple renamings (which is often necessary with maps).
Dupe of MCPE-18393, MCPE-18764. Partial Dupe of MCPE-16948 (original report seems to work as intended, this bug reported in comments.)
Except when resized in the same location the original map was created, it does not fill in at all. So, it either relocates, or does not work at all. iOS 10, iPhone 6s. Survival mode.
Duplicate of MCPE-17647, MCPE-18393, MCPE-18751, and dupe of bug reported in comments of MCPE-16948
Same problem on iOS 10.1.1 iPhone 6s on a Realms server, survival mode. Had this problem since 0.16.0.
Sometimes, it seems that the map recenters to spawn, but other times not.
I was able to resize maps in creative mode on non-server worlds, but the map resizing "anchor" point (where zoom 4 maps meet) was not always (-64,64) relative to Spawn.
We are a having this problem on MCPE Realms 0.16.1 (started in 0.16.0), which seems to be caused by a corrupt chunk. First one player (not owner) could not log in without crashing the entire realm. I attempted to investigate the problem, and started getting disconnected and pushed out of a specific (most likely corrupted) area. I approached it from multiple sides. Finally, I got too far in (via a boat), and now I cannot log in at all. I tried minimizing my rendering distance to no avail. I'm not sure what is in the area to cause the corruption. Are there block-analysis/editing tools that can replace/resolve this? Or reopen this bug? The owner cannot download/save the Realm either. He is thinking of resetting the Realm, but that is a last resort. A dozen or more people have put in months of work on this realm. A workaround for downloading/saving the Realm map would be nice. This is a paid service after all. I am in close contact with the owner and can put you in contact with him.
Same problem. Using iOS 10.0.2 on iPhone 6s to connect to Realm. To clarify, simply placing the frame causes the crash. There is a slight lag before it does so. I was able to place two frames, go around a corner, and place one more before a crash. Another time, I placed the frame, then went to the map I was going to place, and it crashed before I even tried to place it. I find the Realm can be down for a good 5 minutes or more.
Same problem with resizing (note that all map data is supposed to be deleted when resizing):
I can create a map which draws successfully, and added a compass to it, but when I resize the map with an anvil (in the same spot I created it) and view it, the map stays blank. Bug persists up to maximum zoom. I tried moving around, but no drawing. Dropped map and picked it back up, put it in a chest, renamed it - nothing works. Repeated this error three times. In two instances, at zoom level 2, the maps resized maps recentered to Spawn quadrant, which was 2 full (level 2) maps away (to the right/south-if sun rises east). The Level 4 zoom map seems to have a different location I have not found. This is on a Realms server, survival, iPhone 6s, iOS 10.0.2.
Duplicated by MCPE-18393, MCPE-18751, MCPE-18764. Dupe of problem mentioned in comments of MCPE-16948 (though original complaint seems to be works as intended.)
Likewise, for iPhone 6s (easy and normal difficulty). I got a couple of the achievements at first, like for opening inventory, and the one for making all the tools, but didn't get the one for making a wooden sword, and have received none since, including Tasty fish, pork chop, iron armor suit, diamonds, etc. Started a brand new world but that didn't help.
Holding diamond and wooden sword, but achievements not given
Update: In Realms, Zoom 2 maps recenter to 0,0 no matter where the map was created. They seem to work fine in Single-player/local mode. Zoom 1,3, and 4, stay blank, and presumably recenter to an unknown location. See MCPE-17647 and rerddit thread at https://www.reddit.com/r/Mojira/comments/5njy8a/mcpe17647_zoomed_maps_losing_their_data_when/