Compiler language level settings change back

[brittle gust]

whenever I change the language level to 20 (Preview) it gets changed back about 5 minutes later and i get the following error:
java: java.lang.foreign.MemorySegment is a preview API and is disabled by default.
(use --enable-preview to enable preview APIs)

I have
--enable-preview --enable-native-access=ALL-UNNAMED
options for both the compiler and the Maven runner, yet it still keeps changing back to 20 without the preview. In both .idea/compiler.xml and .idea/workspace.xml it acknowledges these options. I know that you're meant to use pom.xml to fix it instead of using the GUI since the project will just be reloaded, but what option do I use since both compilers are version 20?

[fervent swallow]

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[brittle gust]

also i have tried adding

<compilerArgs>
    <arg><![CDATA[--enable-preview]]></arg>
</compilerArgs>

to the pom.xml file, but that doesn't change the compiler used and this throws an error since the default compiler that doesn't support preview features doesn't allow that option (unsurprisingly)