Copied Map Goes Blank When Another Map is Used

This bug also exists in the 13w03a snapshot, except it appears you are only allowed to have 17 maps saved at a time before it erases the primary maps you started with in sequential order.

Confirming. It seems that while the map is blanked out, you can still explore new chunks that have not yet been revealed. In other words, if the map that disappears hasn't been fully explored, only the explored bits get blanked, but you can still uncover the parts that has never been recorded in that map. This results in what looks like a blank cloud hanging over only the old bits.

In order to recreate this observation: do up a far zoom map, explore it somewhat, and create new maps until it blanks. ( I'm trying to make a 3x3 wall frame of zoom level 2 maps that shows in detail my level 3 and level 4 maps. It seems that when creating a map, it is initially assigned a number corresponding to a map that already exists thus blanking out that map. After a second or two, the map number updates to the expected.

I don't know but when i use a map it iz always showing the complete map immediatly.
I don't have to run around to explore everything.
I just use the map and it show immedialty the whole square (map). Which is weird as I saw on youtube the map was building up during the exploration.
So on youtube you got only a small part discovered and it was funny to see it grow.
Now it is just like you buy a complete map of a square with everything on it.

I have the same problem: created a map, then zoomed out 2 times. After creating another map + 2 zooms in the new one, the contents of the first map disappeared.

@Christophe
The first map you create is a very zoomed in version, you have to zoom out first to get unexplored areas on it.

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Since the latest version I don't have any problem with it anymore.
Same with some other bugs like the painting that dissapear it seems solved.

This has been happening to me ever since I got Minecraft (soon after 1.5 came out) in both singleplayer and multiplayer. In the first world I made, it took a few maps before the earlier maps I made started to turn blank. But since then, whenever I draw another map the previous map I made goes blank. I also noticed that sometimes a few pixels return, but then it stops drawing.

I have a screenshot of what a map looks like the last time it happened, on my server in the current version (1.5.2). I'm going to attach it to this.

Same in 1.6

I've had a map blank on me in 1.6.2. And just like Poker Chen commented, I noticed that the new map I was creating briefly had the same map # (#3) as a previously created map and then switched to a new # (#7). After this, map #3 was blank. 😞

When I played two of my worlds in 1.6 that I haven't played since 1.5, all the maps that I had drawn returned to normal. I haven't tested if drawing a new map (or exploring new areas on an existing map) will cause the rest to turn blank again. I might try it out, since I don't really care for the maps anymore.

Thankfully, the next time I played, the map repainted the explored areas.

Yes, i created a map in 1.6.2 with another map in my inventory, and my old map went blank.

Same thing happened to me when scaling a map in 1.6.4. Just like Poker Chen
steps:
Made map (#0), scaled it to x8 (became #1,#2,#3) and explored a bit.
made map elsewhere (#4), scaled it (briefly #1, then #5), again (briefly #2, then #6) and to x8 (briefly #3, then #7).
Checked map #3 with each scale step, it was fine until it blanked the explored part when enlarging map #6 to x8. It must be the brief overlap that does it.
Made map (#8), scaled it (briefly #5, then #9), again (briefly #6, then #10) and to x8 (briefly #7, then #11), found map #7 blanked.
The copies of my maps on the wall also went blank.

When I restarted Minecraft, all 3 maps were back to normal.

It would be nice if the number stayed the same when scaling maps. It's better to have maps #0,#1,#2... instead of #3,#7,#11...

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.

Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been deliviered.

The instructions are a bit unclear. For example: Should I open the copied map (stack of 2) before switching to the other one? And can the other one be of the same area? And should I create it when switching to it or should it be pre-created?
I tried some combinations and none of them triggered the bug in 1.10.