We are having a weird issue with 1 parent node (netmon 2 in the screenshots) and 2 child nodes (netmon 3 and netmon 4 in the screenshots).
If you look at both their dashboards, the last 20 issue section looks normal.
However, if you look at the summary of the 2 dashboards on the parent's dashboard, the triggers of netmon 3 have the wrong last change date. It appears that the date is displayed incorrectly, but the sorting is working normally. If you look closely, the items are correctly sorted where they should be in the list, but it's just showing some kind of offset of the real date.