LTC3649 current limit - at shor circuit does not work (is that simulation only or real part too?)

Hi,

Trying to simulate downloaded LTC3649_DC2112A.asc and it gives strange result:

Just added current limit resitor 80k to limit current at 1A. At moderate loads (ie 2ohm) it works as expected. But when output is shorted (~0.1ohm)  simulator shows 4A current.

Is that just a simulator problem or real part does also this?  If so, it would mean part has no short  protection and  what for is the current limit  then if it does not work when needed most?

Here is LTspice screen of both iterations: