Hello,
It seems that from 1.4.5+, Terraria made some other changes (perhaps as to optimize the rendering area to what they consider their maximum) which prevents the full widescreen from rendering fully. See attached screenshot:

This is running at 5120x1440.
I think more patches will be needed besides just removing those 20 instructions. Even with 6 removals we can get the same effect, but some view matrix perhaps will need be be patched somewhere around there as well.
Hello,
It seems that from 1.4.5+, Terraria made some other changes (perhaps as to optimize the rendering area to what they consider their maximum) which prevents the full widescreen from rendering fully. See attached screenshot:
This is running at 5120x1440.
I think more patches will be needed besides just removing those 20 instructions. Even with 6 removals we can get the same effect, but some view matrix perhaps will need be be patched somewhere around there as well.