Large green scrollbars

Hi everyone,

All the scrollbar in the application are very large and green ?
Do you know why ?

Before launching the application, I installed jre17 by following the instruction in the documentation. Java is up to date.

kfocal@kfocal:~/Downloads/portfolio/test/portfolio$ sudo apt install openjdk-17-jre
Reading package lists... Done
Building dependency tree       
Reading state information... Done
openjdk-17-jre is already the newest version (17.0.9+9-1~20.04).
The following package was automatically installed and is no longer required:
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 93 not upgraded.

I’ve never seen a scrollbar at this point, it must be due to the screen resolution.
The other scrollbars look completely normal to me, I suspect it’s due to the theme used.
Do you use xfce, gnome, kde, whatever? Can you test how it looks with the default theme for you?