I have an issue with expandable groups on sao, because icon and panel heading element have the same color, and for that reason icons seems to be missing.
I agree. Maybe there are cases but the screenshots here don’t convince me because the wording already says it all. For better UX, some field descriptions can be cleaned up and shortened. You have a group “Timestamp”, so “Timestamp Rounding” could be reduced to “Rounding” because it’s in the “Timestamp” group and therefore it’s about timestamps.
Also keep in mind for better UI/UX there should always be an icon or never. You cannot have two groups below each other or side by side and one has an icon and one not.
If this is going to make it into production please add an option to switch it off or on.