UBB.threads PHP Forum Software Community Forums UBB.threads 7 Bug Reports Unread post icon indicator feature not working

I had thought that this long-standing bug was finally fixed in 7.5 but it doesn't seem to be the case here.

If I view a previously visited thread in Threaded Mode where I had read, for example, all the replies of the original post and where there are now several new replies, the unread (yellow) folder icon is displayed correctly for those new replies. HOWEVER, if I view the first new reply all the other new replies then display the "read" (white) folder.

This one always seems to be an issue. I definitely know how to fix it properly, which requires a total overhaul of how threaded works, but that will be for 8.0. I'll see if I can't tweak it a bit more for 7.5.1 and see if I can't figure out what's happening.