MSVC420 doesn't support UTF-8, so the (R) symbol must be in Windows-1252 encoding instead. A PR seems to have reverted this back to UTF-8 (a code editor probably did this without even mentioning it)
In 1.0 WINDOW_TITLE seems to be a define like WNDCLASS_NAME. However, in
1.1 it is a const char* like in the already existing code. It also has a
value of "Lego Island" in 1.0 but a value of "Lego®" in 1.1.
For some reason the decomp version is doing the first xor in
EnableFullScreen with the operands swapped. The source code and
the original binary both have m_flags ^ e but the decomp binary has e ^
m_flags. This gives the same result but it is not a 100% match in the
binary. I'm not sure why the compiler is doing this or how to
change it but the other inaccuracy with the function is fixed.