Can “inheritance navigation icon” be turned off?

Hello!

There's only option to disable Action bar in ReSharper | Options | Environment | Editor | Editor Appearance. Though it means that other action items won't be on the margin as well.

You can play with different options to choose the one that may suit you - https://www.jetbrains.com/help/resharper/Reference__Options__Environment__Editor__Editor_Appearance.html

Thank you.

I disable the  "Action bar",  but the those icons just move to the left gray sidebar.

Before disable action bar

disabled action bar

Hello!

Please accept my apologies, currently there's really no way of disabling these indicators.

I've filed corresponding feature request in our issue tracker - https://youtrack.jetbrains.com/issue/RSRP-468201

Please feel free to comment or vote for it.

Thank you.