Frontier Gate Boost bugs while using IR or interpreter

[unknownbrackets]

Might be some form of invalidation problem for IR - see #7066. But even interpreter behaves weirdly (but different.)

While testing that other bug, I had created save data with a new game.

With x86jit: I'm able to go into the place where you get missions.
With irjit: When I approach that place, I end up in some other place about half way there.
With interpreter: When I approach that place, I suddenly disappear and can no longer move. The game isn't frozen, though.

Very strange...

-[Unknown]

[unknownbrackets]

Maybe this is related to rounding mode, which I think doesn't work on IR and maybe not interpreter either.

-[Unknown]

[unknownbrackets]

This bug appears to be fixed actually, anyway. So closing. I can't reproduce any problems with IR or interpreter now.

Note: I did test using the #16396 fix, but I suspect it's some prior interpreter fix, maybe the vscl one.

-[Unknown]