Well, nothing you are describing is consistent with any typical vaccine reaction.
The typical symptoms that would concern me are:
2. facial or any body swelling
3. hives or welts on the body
4. labored or open mouth breathing.
A normal reaction would be appearing a bit lethargic or off food for 12 to 24 hours.
So, overall, at this point, I don't believe the behavior change is a concern, and I can't attribute the behavior change to the vaccines.
Just for your information:
The typical cat vaccines are:
2. FeLV (feline leukemia)
3. FVRCP (also called the combo)
Hope that information helps