If a map of 1x2x1 is sent to the client it crashes.
If a map with dimensions that are not a multiple of 16 is sent the client leaves the "top" addresses as air.
If a map of 16x16x16 is sent the client has very high CPU usage.
A map of 32x16x32 works fine as do higher multiples of 16x16x16 cubes.
Padding maps sent to a classic only client (that didn't ask for CPE) to avoid this seems like a good idea.
If a map of 1x2x1 is sent to the client it crashes. If a map with dimensions that are not a multiple of 16 is sent the client leaves the "top" addresses as air. If a map of 16x16x16 is sent the client has very high CPU usage. A map of 32x16x32 works fine as do higher multiples of 16x16x16 cubes.
Padding maps sent to a classic only client (that didn't ask for CPE) to avoid this seems like a good idea.