Touchscreen as Lightgun always shoots center of the screen first

[shad00m]

Retroarch 1.22.2
Genesis Plus GX 1.7.4 83485a2
Retroid Pocket 5 (Android)

Core Options / Input / Lightgun Input / Touchscreen
Controls / Port 2 Controls / Device Type / MD Justifiers (mapped port 2)

I have configured the touchscreen on my Retroid Pocket 5 to function as a light gun. While playing Snatcher (Europe), I noticed that I am only able to shoot at the center of the screen.

The white circles shown in this video represent the actual input positions registered by the touchscreen.

snatcher.webm

In the "Gun Adjust" settings menu, it only shoots where I'm pointing at about half the time - randomly it still shoots the center:

gunAdjust.webm

In another Konami game called "Lethal Enforcers" the Justifier works fine until you get the machine gun, then some of the shots also go to the center.

I've tested this in T2: Arcade Game and it first shoots the middle of the screen before moving to where I point, which is fine in this game.

t2.webm

As a laymen it seems that it first presses "fire" and then moves to the touched location or it recenters too quickly?

I'm unsure if this is related to the core Genesis Plus GX or to Retroarch itself. If it's a retroarch issue I apologize and feel free to close this issue without comment.