MacOS changes default boot device.

I am having an issue where if I boot into macOS my default boot device is changed from my hard drive that has linux on it to the drive with macOS. Even if I go into my bios to to change it back, Open core still loads first. To correct the issue I have to boot into my linux install and change the boot order with efibootmgr. Any ideas on why this may be happening?

submitted by /u/Chronigan
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