We installed EHP5, but we didn't change the iviews or anything. So we are still using the java iviews that were available since EHP3. That being said we didn't run into this problem until after support packs and installing EHP5.
Think we did make a delta link and made some changes. Because we can see each subtype in a separate iview instead of one large one. I believe we've tested the iview that is still in the applications provided by SAP folder. I could double check that. Rather not over look anything. I was surprised that no one else was having this same issue at least that I could find online. Currently this is the only system we support that had portal and EHP5 so we don't really have another box to compare it with at the moment.
I will double check the standard Iview. I believe it was doing the same thing which lead me to think it was in the underlying code somewhere. Like a GET/Write data type command.