Airtest returns true for item that doesnt exist on screen

How is it possible that Airtest passes for such scenario

Im checking if chrome icon exists, it clearly doesn't. AirTest returns exists with 63% confidence ?? HOW?

**python version:** `3.7.7`

**airtest version:** `1.2.5`

**Smartphone (please complete the following information):**
Device name:
HUAWEI_P9_lite
Manufacturer:
HUAWEI
Model:
HUAWEI VNS-L21
System:
N/A ver. 4.1.18-g82549c5
CPU:
N/A - arm64-v8a
CPU Cores:
8
GPU:
ARM Mali-T830 OpenGL ES 3.2
Motherboard:
hi6250
Storage:
52.66 GB
Screen size:
1920 x 1080
Screen density:
480 / -1
Total RAM:
1823.96 MB
Used space:
18.26/52.66 GB