June 2020... the problem is still there.
Trying to detect some simple geometric figures (cubes mainly).
Covered with different kind of textures to add details, but the result is always the same.
Vuforia Object Scanner, then Test Mode ... works perfect. (quick detection and smooth tracking, starting from any face)
Added to a database in Vuforia Target Manager page, download and import into Unity ... works awful.
The pyramid works perfect.
The cube with similar texture just 1 face is detected.
The cube with too many letters (backwards) is never detected (on Unity), but in the Object Scanner App works perfect (up to 1300 feature detected)
WHY WORKS ON VUFORIA OBJECT SCANNER APP ... BUT NOT ALREADY IN UNITY!!
(maybe, the internal Scanner App uses a different engine version internally?)
Also... testing in Unity Editor (PC using a webcam) get some detections, that missing afterwards on the Android build.
I have already tested any previous suggestions, but none of them gets the Vuforia Unity Engine works as in the Test Mode of the Scanner App.
Android 10 on Samsung Galaxy 8+ (also trying on Samsung Galaxy 7)