Images put in Combobox components rendering differently than Image components

Hi there, this is my first post on those forums and my first Unreal Project so if anything is not properly setup please bear with me.

I’m in the process of building UI Widget components and I wanted to use custom images to stylize my Combobox’s arrows (and other UI components). I imported my textures with those settings as recommended for UI Textures.

Problem is, when I want to use said textures to customize my dropdown style, I noticed that it renders the texture differently than a simple Image Component:

The image on the right is the standard Image component while the one on the left is the same textures but used inside the Down Arrow Image section of the Combobox:

I was wondering if there was a way to render the arrow component as it is rendered in standard Images Components. In this case, I want to keep the white/gray texturing, I don’t want a flat black version of my textures.

Thank you !

PS: I’m using UE 5.1 and exporting those images as PNGs from Illustrator.