There is a known issue in the released version of 6.3.1 affecting the screen layout in Transform. Therefore, it is recommended to apply the post 6.3.1 patch to all 6.3.1 instances.
The patch may be obtained by opening a support ticket and contains the following changes:
DSP-6134: Remove extra security entries if exists.
DSP-6204: ISA Service Page and Manual Demand can create Two Running Entries cause Database Deadlocks
DSP-6193: Job Monitor page in Common will not open. Deadlocks and Wait timeout exceeded
DSP-6197: Transform - Target Source Rules Page Misaligned.