Why the date of the red activity is calculated like that ?
@startgantt
Project starts 2026-08-20
[K1 C S I_A24] happens 2026-08-26
[K1 C S A24] requires 4 weeks
[K1 P_A24] requires 15 days
[K1 C S A24] starts at [K1 C S I_A24]'s end
[K1 P_A24] starts at [K1 C S A24]'s end
[K2 T_A24] requires 15 days
[K2 P_A24] requires 15 days
[K2 P_A24] starts at [K2 T_A24]'s end
[K2 P_A24] is colored in red
[K2 T_A24] starts at [K1 P_A24]'s end
[Setup] starts 2026-11-10
[Setup] ends 2026-12-07
[test_A12] requires 2 weeks
[test_A12] starts at [Setup]'s end
[test_A12] starts at [K2 P_A24]'s end
@endgantt
