ArcGIS 3.0 (and 3.0.1) came with a Bug that when exporting a Map Series with a Dynamic Attachment window, if the record doesn't have an attachment, it fills the attachment window with a random attachment. In the attached PDF, the upper line of Map Series exports have three Dynamic attachment windows in the layout. Only two of those hace attachment so the third is supposed to be blank. But, in the lower line of the Map Series exports, the third window is fill with a random attachment. and is the same attachment in all the layouts.
I thought that the 3.0.1 patch was going to fix this, but it didn't.
Please fix this bug as mu jobs demands me to constantly export map series with dynamic attachment. I had to get a second computer just to installed ArcGIS Pro v2.9.3 just to export map series.