Graphical Errors on android phones when switching tabs

Development Platform & Builds Mobile
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1

i am experiencing a strange issue and i don’t really have any idea on how to go about debugging or solving it.
When changing tabs to and from my application on android using the navigation bar a black graphical error appears on the charging port side where the navigation bar usually is located. it is almost a crackling effect the rapidly spreads across the screen and then recedes. this happens on widgets that take up the full screen space and seems to happen when interacting with the android UI.

This only happens on 2 out of 6 devices that i have tested.

devices tested:
samsung s21 ultra

samsung note 10 plus

g tab T12 tablet

samsung A06

samsung s20 fe

google pixel 6a

devices affected:
samsung s21 ultra

samsung note 10 plus

the only thing i can think that is unique to the 2 devices affected is that they both support the samsung s pen but i dont know how to go about fixing it.

any help/advice is much appreciated

2

some more information

UE version: 5.6

vulkan support is enabled

targetSDK: 35

minSDK: 31

these artifacts don’t show up when screen recording.
only happens when interacting with the samsung system UI such as the notification panel or unlocking the screen or using the tab switcher.

3

I successfully resolved the issue. I disabled Vulkan support and it seems to have removed all instances of this error. As my application is lightweight disabling it doesn’t seem to have had any negative impact on performance.

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