After a recent update I just noticed that the calendar and notification center opened from the clock on secondary monitors appears to be cut off. Missing saturday. It also seems to open shifted upwards and to the left.

Main monitor: https://i.imgur.com/jk4EZld.png
Secondary monitors: https://i.imgur.com/NJtq2kq.png

Yes that is accurate.

My main monitor is a 3440x1440 at 100% scale landscape

Secondary monitors are 2560x1440 at 125% scale portrait