The Fire Mage priority (and spec mechanics) are far more complicated that most. This is known and does not need to be reported.

If the performance impact is too high, and the settings in /hekili > Fire > Performance aren't sufficient, my recommendation is not to use the addon with your Fire Mage.

No further reports are necessary at this time. Thanks.

Hello. Is there a way to fix this problem? Or can't it be removed? Thank you in advance

There have been recent improvements, but what you see is what you get.