The changelog had the following change listed for Dr. Strange for the 26.0 update:
DOCTOR STRANGE - Fixed an issue where Hoggoth’s Wisdom was not providing the correct Power Gain Potency. Summoners should notice an increase in Power gained when Hoggoth’s Wisdom is active.For some reason, Dr. Strange's PI changed pretty dramatically once the update went live. Here's a shot from before the update:

Here's a shot from after the update:

For a maxed out 5* Dr. Strange with no mastery change, his PI went from 13,189 to 12,500.
Additionally, Hoggoth's wisdom has been changed from a Passive icon to a Buff icon, meaning it can now be nullified when it couldn't before.
Please look into this.