Since the 30 September update, CS2 shows the grenade crosshair during freeze time: pick up a grenade and hold either throw button.
Valve says the change is meant for insta-smokes, the grenades you throw from spawn in the first seconds of a round. Before, freeze-time lineups had to be lined up with the regular crosshair; now you see the same marker you get mid-round. On 2 October Valve fixed how this crosshair renders at a line thickness of 3 px. If you already use the grenade crosshair, there is nothing to switch on.
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