Cherry pick #1867 (#1869)

Author: AdamTadeusz

src/game/shared/baseentity_shared.cpp

@@ -2355,7 +2355,7 @@ void CBaseEntity::HandleShotPenetration(const FireBulletsInfo_t& info,
 	behindMaterialInfo.m_flDistance = info.m_flDistance * (1.0f - tr.fraction);
 	behindMaterialInfo.m_iAmmoType = info.m_iAmmoType;
 	behindMaterialInfo.m_iTracerFreq = info.m_iTracerFreq;
-	behindMaterialInfo.m_flDamage = info.m_flDamage * (1.f - (penUsed / info.m_flPenetration));
+	behindMaterialInfo.m_flDamage = info.m_flDamage * Max(0.25f, (1.f - (penUsed / info.m_flPenetration)));
 	behindMaterialInfo.m_pAttacker = info.m_pAttacker ? info.m_pAttacker : this;
 	behindMaterialInfo.m_nFlags = info.m_nFlags;
 	behindMaterialInfo.m_flPenetration = info.m_flPenetration - penUsed;