Android Studio 3.0 - Settings are not saved

If you are selecting the default option in Code Style then it is going to reset again to 100 value

Try to select Project from Scheme and apply the setting it is working

if You are setting it default then it is reset to it default value

File->Settings->Editor->Code Style

Just remove the next row from gradle.properties

kotlin.code.style=official

Dont forget to re-apply codestyle settings in IDE settings or in /.idea/codeStyles/

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