Put the summary of the bug you're having here

What I expected to happen was...:
to make 4 zoomed in maps and put them on item frames on a wall, to veiw my village, more zoomed in.

What actually happened was...:
I made 4 maps and put them on the item frames on the wall, and some of the maps where completely blank even though I allready explored them. After that I replaced the blank maps, and my other maps that where not blank went blank.

*Steps to Reproduce:
this may not work(the bug is complicated and it only happens sometimes, so I tried different things, but I still can not find an exact recipe for recreation of the bug.)
NOTE:
it may not work unless you have already created maps for the world(possibly more zoomed out also).
the bug has happened to me multiple times, and not on the same computer. so therefor I know it is not my computer acting up.
1. Make 4 maps and completely explore each.
2. look at each map, to see which one went blank.
3. replace the blank maps with explored maps(optional).
4.look at maps that where not re-explored and some will be blank(if you did step 3).