Sorry it is showinng error if i click tab at the last column in tthe last row of the child table
I tried the PDF file attached with your sample and it is working the problem is in PDF files i'm using as these files are generated using SSRS reports rendering
I attached sample of these files , it is opening in pdf reader normally and browsers also the problem is in your PDF viewer.
Kindley note that these files were opening your pdf viewer in the previous release.
Attachment:
PDFs_cb3b334b.rar