Summoner pet statistic bug?

[cuteghoul]

Hi, i have tested this with a 14 level summoner with 4 class talents free.
When i summon a "skill level 1/1" jelly it materializes with 200-270ish hp (its random) .
When I boost it to 5/5 with my 4 class talents and summon it again its hp stays the same (between 200-270)
When i take control of the jelly or inspect it, i can see its constitution is now boosted to 120 from 30-40.
The constitution is boosted 60-70 points correctly but the problem is the pet did not earn cons.x4 hit points in the process.
It should have at least 250 more hp (maybe 500+ total) when i summon it after spending 4 talent points.

I am pretty new to tome so i was wondering if this is actually a bug or pets do not earn hp from their constitution stat? (though i think gaining only physical saves from constitution stat would make some summoner talents very weak).

Any reply is appreciated.
Thanks