Thank you so much for the link. I missed the region override part that’s why it did not work. I have now included the region override and it seems to be working.
@Juso3D
Here is the addon:
Auto Highlight in Outliner.zip (2.1 KB)
Enable ‘Auto Highlight’ under the filters dropdown of the outliner
I haven’t done much testing so if there is any issue please let me know.