My concern is that there is some kind of technical issue that's preventing certain transactions from being propagated to certain nodes and that is something that should be of concern for the entire community.
Not that I am aware of any issues that can cause this kind of discrepancy in the propogation but as usual there can be a few minutes delay.
I read Network partitioning is a serious vulnerability that caused a similar kind of issue that you are talking but it was fixed a long back.