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You are facing a bug in SageMath 9.2, which has been corrected since then. As pointed in @slelievre 's comments, it's recommended to install the latest stable version of SageMath (9.5) from source. This is easy on Ubuntu-based systems, simply follows these steps (this is for Ubuntu 20.04 but it should work on your system).

You are facing a bug in SageMath 9.2, which has been corrected since then. As pointed in @slelievre 's comments, it's recommended to install the latest stable version of SageMath (9.5) from source. This is easy on Ubuntu-based systems, simply follows follow these steps (this is for Ubuntu 20.04 but it should work on your system). system).