open the plot Multi-Panel Graphs - Multiple Layers with Line Plot from Learning Center
select plot in layer 3, select show label in MT
open PD, go to label tab, select Show at specified points only, fill edit box with 0==> not all plot show label for last point
No such issue if you plot a new line plots. This graph is saved from sample project, no such issue in Origin 2021b.
If I enable last point label in Origin 2021b, and open in 2022, some labels are missing.
Fixed in Origin2022b.