One of the meeting points found on deserts generate with sand on it where it should not, covering the space of the meeting point. The amount is a bit randomized but it consistently generate with it, a similar issue happens with a plains village meeting point (see MCPE-177676).

Steps to Reproduce:
1. Create one or various worlds (use a random seed).
2. Find a desert village with this kind of meeting point.
3. Observe it.

Observed Results:
There is sand covering the space around it.

Expected Results:
Only the sand on the ground should be here.

Here are a few footages of the bug, on various different villages: