Shaper of Flames - Bug

Since 3.27, Shaper of Flames appears to cause the player to take significantly more Fire Damage from enemies than before.

Previously, if an enemy dealt 100 Physical Damage and converted 10% to Fire, the result was about 90 Physical / 10 Fire damage taken.
Now, the same scenario feels more like 90 Physical / 40 Fire, leading to much higher total damage.

I player made this video to showcase the bug:
https://www.youtube.com/watch?v=wDXlNoHDOHo&t=1s

This is also being discussed on reddit:
https://www.reddit.com/r/pathofexile/comments/1orm5z7/converting_enemies_damage_to_elemental_causes_you/

Any indication that GGG is aware of this? Have they addressed it?

Ruetoo Explains Elementalist Bug
https://www.youtube.com/shorts/LjdrLxsYUi4?feature=share