Atom One Light Not showing selecting syntax highlight

[djx0716]

Describe the bug

UI: Atom One Light
When typing code using this UI, the auto completion pop window is not working properly.
The autocompleting candidate highlight disappears when I try select other candidates using keyboard arrow up and down button.

To Reproduce

1. Switch to Atom One Light UI, or its derivatives.
2. I am using Java, so I just type pr, the autocompleting window pops up, with the choices of as the image sugges

3. Press keyboard arrow up or down to select from candidate, the selected highlight will disappear.

Expected Behavior

the highlight will not disappear as I select between candidates.

Environment

IntelliJ IDEA 2024.3.4.1 (Ultimate Edition)
Build #IU-243.25659.59, built on March 5, 2025
Licensed to me
Runtime version: 21.0.6+8-b631.39 amd64 (JCEF 122.1.9)
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.awt.windows.WToolkit
Windows 11.0
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 4086M
Cores: 16
Registry:
ide.balloon.shadow.size=15
ide.experimental.ui=true
Non-Bundled Plugins:
com.alexanderpa.flyway.migration.creator (2.4)
com.mallowigi.idea (25.0.0)
dev.meanmail.plugin.nginx-intellij-plugin (2024.5.1)
PlantUML integration (7.11.2-IJ2023.2)
izhangzhihao.rainbow.brackets (2024.2.9-241)
com.github.copilot (1.5.38-243)
com.mallowigi (101.2.0)
Kotlin: 243.25659.59-IJ

Screenshots

[McGoof22]

I’ve got the same problem. Would be lovely if it could be fixed.

[mallowigi]

Isn't this the completion proposed by the AI plugin? Makes sense that it disappears.

[McGoof22]

Seems to me that Copilot has the right idea, yeah.
Seeing as changing or disabling the background colour of "Completion" seems to help.

Changing colour code to #d6e1f1:

Result:

[mallowigi]

Well originally this made sense to have a background color, but you're saying that it should be removed now?