According to the Tax Bureau in Taipei, this is standard practice. They told me the following when I inquired about that issue:
Regarding your incorrect withholding statement for a bank account, there is no way to tell the bank to correct your incorrect withholding statement.
The bank can not judge whether your are resident or non-resident during the whole year beause they can not access your entry and depart records.
So the real issue lies with the issue of tax residency of foreigners according to tge tax bureau discussed in that thread (which was actually started using the picture of my Richart withholding statement I posted earlier in this thread):