I have seen this before shooting Nosler Accubonds. The eldx construction is somewhat similar. The front part of that bullet is relatively soft And the jacket thinly tapered. When it made initial contact here it caught enough resistance to actually explode (disrupt) the front part of the bullet. Hence the large entry wound.
Next, what's left of the front jacket will fold pretty sharply back around the intact rear portion. This front jacket will usually just be jacket as the lead has separated and driven on forwards. Wreaking havoc on the vitals. The rear portion with the jacket folded back around it is more cylindrical than mushroom shape and narrower than the classic mushroom that we all think of. That rear portion tends to penetrate quite deeply and will often exit. But not in the dramatic fashion that we would think it would. It'll leave a hole anywhere from just a shade over caliber size to around a golfball size depending on what it contacts as it exits.
I have actually seen this happen fairly often and it will tend to limit the blood trail to an extent. But I shoulder shoot unless something occurs that prevents it so I really don't worry much about light blood trails.