There is wrong behavior while Instant Tracking.
I try to set objects on several surfaces (floor and table).
If I start with floor (set objects on the floor surface), then table (set objects on table surface) - it's ok.
But if thereafter I try the floor again, the object will be set on the height of table, not floor. First time it works correct, but after a short time absolutely not.
It looks like table's surface is bigger than real table and it overlaps floor surface.
What can I do to detect surfaces correctly?
Wikitude version 8.10.0
Use Wikitude SDK for Unity
Work in Unity 2018.4.5f1
Tested on Xiaomi Mi 8
The problem is in even your test app.