User Name Suggest - PM
 

Since upgraded to 3.8.x the Name suggest functionality in PMs stopped working. I have tried some suggestions I found on one other thread:
- Making sure I use the Basic template
- Enable Ajax/Disable Ajax
- Disabled most of the installed mods

Lastly, I upgraded to 3.8.4 PL2 but still no go. One observation I noticed that the 'Mark Forum Read' would stop working as well if I enable Ajax. Also, the way the 'Mark Forum Read' works (with Ajax disabled) is that it would mark the forum read and jump to the parent forum instead of staying in the forum that the operation was performed on.
I'm not sure is these two are related but... any help would be appreciated.