I'm using Drago 4.32. When I export the following SGF to PDF:
(;GM[1]FF[4]CA[UTF-8]AP[Sabaki:0.52.0]KM[0]SZ[19]DT[2023-03-23]AE[br][fs]AB[ar][gs][gr][gq][fq][eq][dp][cp][bp]AW[bq][cq][dq][bs][ds][er][fr];B[cr];W[br];B[dr];W[cs];B[dr];W[cr];B[fs];W[aq];B[es])
the diagram looks like this:
Stone 2 is missing from the diagram (and its position is noted in the caption) despite there being no good reason for it not to be present.
I have noticed this issue in other diagrams but I assume one example is sufficient.
Well, here's one more, since it's so clear:
(;GM[1]FF[4]CA[UTF-8]AP[Sabaki:0.52.0]KM[0]SZ[19]DT[2023-03-24]AW[br][bp][cp][dp][ep][eq][er]AB[aq][bq][cq][dq][dr][ds]AE[bs][ar];B[bs];W[ar];B[cr])
is rendered as: