Not sure where this info about the build performing poorly is coming from. The build can clear 1000 corruption afaik. Really hope it’s not just taking one of the commenters above seriously.
No, it wouldn’t.
A perfect Shield Bash spec can reach 800+ base damage on the skill, so you lose around 10% base damage from the bugfix.
After 1.1.5 bugfix, Shield Bash is still incomparably stronger than 1.0 Shield Bash which had no damage scaling and no % more multipliers.