The orbit camera suppressed wheel zoom whenever Shift/Ctrl was held, to
reserve Shift/Ctrl+wheel for the paint brush resize. But Shift is also
the sprint key, so sprinting blocked zoom outside paint mode.
Gate the reservation on PanEnabled (set only by PaintMode.Enter/Exit), so
the wheel is only claimed for brush resize while actually in paint mode;
otherwise it zooms normally.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
adminandClaude Opus 4.8
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