Research Breakthrough- Pokemon can flee?

It seems they can't flee. I'm using pinap.

Pinap! I didn't want to temp fate so I used curved Ultra Pinap. I haven't heard of ''it'' fleeing from anyone yet.

I caught mine this morning. Two ultra balls and a pipnap.

For those who already have it, I think it's worth pinapping.

The next questions are did everyone get Moltres, and if so, what will be the next "research breakthrough" encounter pokemon in seven days?

Mine was stubborn and ate through 7 pinap+ultra balls. It does seem that they can't run away. You can apparently even go back to the encounter if you run out of balls and have to flee.

I caught mine with a red ball and GR, I only had 3 balls left (had go plus going so would have refilled balls). I did Moltres and Mew on the same lucky egg and star piece. Moltres 13/15/15. Mew 13/14/15 WF/Grass Knot. 350k from 40 (with 18 lucky eggs still in my bag)

To verify; my Moltres jumped out of around 10 ultra balls and pinap. It seems it's flee rate is 0%

Snorlax from research fled after I throw the second ball.

Mine fled. I used an ultra ball and pinap on snorlax and it fled.